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Burgmann Mechanical SealsConventional and Gas-lubricatedfor Pumps, Compressors,Agitators and Similar Applications.Seal Supply Systemsand Components.

Des

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Man

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15.5

Your partner for sealing technology worldwide

Contents

At www.eagleburgmann.comyou will not only find all the main seals covered by this catalogue but also the CASS Seal Selection Program and a great deal more besides.

Important Note:All the technical references are based onextensive tests and our many years ofexperience. The diversity of possibleapplications means, that they can serveas guide values only. No guarantee canbe given for a specific case unless theexact conditions of application are knowto use and confirmed in a special agree-ment. For particularly critical conditionsof operation, e. g. involving a mixture ofproducts, we recommend you consultwith our specialist engineers. It should benoted that the maximum values of eachoperating parameter cannot be applied atthe same time. Subject to change.

Table of Materialssee inside back cover.

2 Alpha-numericalProduct Indexlisting all the mechanical seals in this catalogue and a

Keyword Index

1B u r g m a n n M e c h a n i c a l S e a l s D e s i g n M a n u a l 1 5 . 5

Contents3 Seal Selection

by Media

25 Mechanical Sealsfor Pumps andCompressors

67 Gas-lubricatedMechanical Seals for Pumps,Mixers, CompressorsGas Supply Systems

83 Mechanical Seals for Agitators, Mixersand Reactors

95 Supply Systemsand Componentsfor liquid-lubricatedMechanical Seals

115 Case Examplesand Recommendationsfor Applications

139 Notes on Design,Installation and Operation

Index

2 B u r g m a n n M e c h a n i c a l S e a l s D e s i g n M a n u a l 1 5 . 5

M78N . . . . . . . . . . . . . . . . . 30, 31M7F . . . . . . . . . . . . . . . . . . . . . 31M7N . . . . . 30, 122, 136, 133, 143M7N/H7N . . . . . . . . . . . . . . 32, 48M7N/M7N . . . . . . . . . . . . . . 32, 48M7S2 . . . . . . . . . . . . . . . . . . . . 31MAA . . . . . . . . . . . . . . . . . . 97, 112MAF . . . . . . . . . . . . . . . . . . 97, 112MF95N . . . . . . . . . . . . . . . . . . . 39MFL65 . . . . . . . . . . . 65, 125, 126MFL85F . . . . . . . . . . . . . . . . . . 40MFL85GS . . . . . . . . . . . 40, 69, 74MFL85N . . 40, 123, 126, 133, 134MFLC-GS . . . . . . . . . . . . . . . . . 124MFLCT80 . . . . . . . . . . . . . . . 40, 41MFLW80... . . . . . . . . . . . . 125, 133MFLW85S20 . . . . . . . . . . . . . . .124MFLWT80 40, 41, 124, 125, 126, 145MG/M3 . . . . . . . . . . . . . . . . . . 134MG1 .36, 37, 127, 128, 134, 135, 137MG12 . . . . . . . . . . . . . . . . . . . . 36MG13 . . . . . . . . . . . . . . . . . . . . 37MG1-45/G6 . . . . . . . . . . . . . . . 123MG1-G6 . . . . . . . . . . . . . . . . . . 137MG1S20 . . . . . . . . . . . . . . . . . . 37MG1S5 . . . . . . . . . . . . . . . . . . 133MG9... . . . . . . . . . . . . . . . . . . . . 34MR..(L)-D . . . . . . . . . . . . . . . . . 90MR33(L)-D . . . . . . . . . . . . 91, 138MR33S1-D . . . . . . . . . . . . . . . . 138MR5LF-D . . . . . . . . . . . . . . . . . . 91MR-D . . . . . . . . . . . . . . . . 90, 137MRF-D17/65 . . . . . . . . . . . . . . 123Mtex-QN,-TN,-QNM,-TNM,-DN 60, 61Mtex-GSD . . . . . . . . . . . . . . . . . 74PDGS . . . . . . . . . . . . . . . . 80, 119QFT1000 . . . . . . . . . . . 98, 99, 131RGS-D1/143 . . . . . . . . . . . . . . . 125RMG12 . . . . . . . . . . . . . . . . . . . 37S14/48 . . . . . . . . . . . . . . . . . . 120S2/245 . . . . . . . . . . . . . . . . . . 120Bulk head 3200 . . . . . . . . . . . . 136SeccoMix . . . . . . . . . . . . . . . . 84SH . . . . . . . . 62, 63, 116, 117, 118 SH-D . . . . . . . . . . . . . . . . . 63, 116SHF . . . . . . . . . . . . . . 62, 128, 130SHFV3/125 . . . . . . . . . . . . . . . . 130SHFV-D . . . . . . . . . . . . . . . 62, 125SHJ92GS4 . . . . . . . . . . . . . . . . 138SHJ97(7)G . . . . . . . . . . . . 43, 138SHPV . . . . . . . . . . . . . . . . 62, 130SHR . . . . . . . . . . . . . . . . . . . . . 52SHV . . . . . . . . . . . . 116, 130, 131SHV-D . . . . . . . . . . . . . . . . . . . 116SMS . . . . . . . . . . . . . . . . . . . . . 81SP 23 ... . . . . . . . . . . . . . . . 97, 106SPA . . . . . . . . . . . 97, 113, 121, 125SPI . . . . . . . . . . . . . . . . . . 97, 107SPK . . . . . . . . . . . . . . . . . 97, 107SPL . . . . . . . . . . . . . . . . . . 97, 107SPN . . . . . 97, 106, 108, 118, 121SPS . . . . . . . . . . . . . . . 97, 98, 107SPU . . . . . . . . . . . . . . . . . . 97, 106STD1 . . . . . . . . . . . . . . . . . . . . . 94Stern tube seal 4600 . . . . . . . . 136TDGS . . . . . . . . . . . . . . . . . . . . 80TS1000/1016 . . . . . . . . . . . 97, 100TS2000/2001/2063 . . . 97, 101, 123TS3000/3004/3007/3016 . . 97, 103TS6000/6002 . . . . . . . . . . . 97, 104Unitex . . . . . . . . . . . . . . . . . . . 56VGM . . . . . . . . . . . . . . . . . . . . 127VTE . . . . . . . . . . . . . . . . . . 97, 114WDK . . . . . . . . . . . . . . . . . 97, 109WED . . . . . . . . . . . . . . 97, 131, 110WEL . . . . . . . . . . . . . . . . . 97, 110ZY . . . . . . . . . . . . . . . 97, 111, 127

Agglomerator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Agitator bead mill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123Ammonia compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . .119API 682 / ISO 21049 . . . . . . . . . .97, 104, 124, 126, 141, 148Axial runout tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . .145Bottom entry drive . . . . . . . . . . . . . . . . . . . . . . . . . . .93, 123Buffer fluid systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96Buffer fluid unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113Buffer medium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97Calander . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133Chemicals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122Circuit, open and closed . . . . . . . . . . . . . . . . . . . . . . . . . . .96Circulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96Circulation systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97Clamping set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94, 146Coal feed screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121Coal gasification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121Coal mining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Code for agitator seals . . . . . . . . . . . . . . . . . . . . . . . . . . . .94Code system EN 12756 . . . . . . . . . . . . . . . . . . . . . . . . . .140Coefficient of friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Coking oven gas compressor . . . . . . . . . . . . . . . . . . . . . . .119Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78, 79, 119Concentricity tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . .145Condensate generation . . . . . . . . . . . . . . . . . . . . . . . . . . .103Conical spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146Contact unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107Cooling coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100Cooling flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94Cooling water consumption . . . . . . . . . . . . . . . . . . . . . . . .142Cutter head seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Cyclone separator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111Distributor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114Double balanced . . . . . . . . . . . . . . . . . . . . . . . . . . .55, 59, 61Drive key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146Elastomer bellows . . . . . . . . . . . . . . . . . . . . . . . . . . . .34, 36Elastomer-free mechanical seal . . . . . . . . . . . . . . . . . . .74, 80External pressurization . . . . . . . . . . . . . . . . . . . . . . . . . . .143Extrusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145Filter dryer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Flash turbines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119Flow meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106Flue gas desulphurization . . . . . . . . . . . . . . . . . . . . . . . . .131Fluid quench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96Gap width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Gas groove shapes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68Gas quench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96Gas separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70Gas supply system . . . . . . . . .62, 65, 68, 69, 76, 81, 125, 148Glass lined vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88Guide sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55Heat dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Heat exchanger . . . . . . . . . . . . . . . . . . . . . . . .109, 110, 111Hot water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . .145ISO 5199 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99Jacket cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143Leakage drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94Level indicator, switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .107Load factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Low-emission seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47Magnet filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112Metal bellows . . . . . . . . . . . . . . . . . . . . . . .40, 60, 65, 74, 80Mineral oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116, 118Multiphase technology . . . . . . . . . . . . . . . . . . . . . . . . . . .116Multipoint injection . . . . . . . . . . . . . . . . . . . . . . . . . . .60, 118Offshore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116Oil-lubricated mechanical seals . . . . . . . . . . . . . . . . . .63, 119Onshore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118Paper industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132Pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118, 127Polymerization buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94Polypropylene reactor . . . . . . . . . . . . . . . . . . . . . . . . . . . .123Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Power consumption due to friction . . . . . . . . . . . . . . . . . . .143Power stations . . . . . . . . . . . . . . . . . . . . . . . . . .62, 130, 131Pressure booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105Pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106, 107Pressure retention unit, control unit . . . . . . . . . . . . . . . . . .114Pressure vessel regulations . . . . . . . . . . . . . . . . . . . . . . . .146Pulp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132Pulper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133Pulpwood grinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132Pump, ammonia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123Pump, aseptic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138Pump, boiler water circulating . . . . . . . . . . . . . . . . . . .62, 130Pump, boiler water feed (booster) . . . . . . . . . . . . . . . .62, 130Pump, condensate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130Pump, cooling water . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136Pump, crude oil loading . . . . . . . . . . . . . . . . . . . . . . . . . .118Pump, dishwasher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38Pump, drinking water . . . . . . . . . . . . . . . . . . . . . . . . . . . .127Pump, eccentric screw . . . . . . . . . . . . . . . . . . . . . . . . . . .123Pump, feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62, 130

Pump, flume water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137Pump, gas oil service . . . . . . . . . . . . . . . . . . . . . . . . . . . .125Pump, gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122Pump, GLP delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125Pump, home and garden . . . . . . . . . . . . . . . . . . . . . . . .26, 38Pump, hot water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129Pump, juice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137Pump, lubricating oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136Pump, main delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117Pump, main feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130Pump, multiphase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116Pump, nitrogen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124Pump, non-clogging . . . . . . . . . . . . . . . . . . . . . . . . .134, 135Pump, pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118Pump, plastic centrifugal . . . . . . . . . . . . . . . . . . . . . . . . . .123Pump, pot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124Pump, pulp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133Pump, quench oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125Pump, raw sludge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134Pump, refill hand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106Pump, residual oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125Pump, return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124Pump, screw . . . . . . . . . . . . . . . . . . .109, 116, 123, 125, 136Pump, standard centrifugal . . . . . . . . . . . . . . . . . . . . . . . .123Pump, standard chemical . . . . . . . . . . . . . . . . . . . . . . . . .122Pump, submersible-motor . . . . . . . . . . . . . . . . . . . . . . . . .135Pump, sulfolan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125Pump, washing suspension, centrifugal . . . . . . . . . . . . . . . .131Pump, water injection . . . . . . . . . . . . . . . . . . . . . . . .117, 118Pumping screw . . . . . . . . . . . . . . . . . . . . . . . . . . .49, 62, 144Quarrying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Quench (installation) . . . . . . . . . . . . . . . . . . . . . . . . . .5, 97Quench fluid tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98Radial clearance seal . . . . . . . . . . . . . . . . . . . . . . . . . .78, 81Refill unit, automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108Refill unit, mobile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125Refiner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132Refinery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124Residue combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122Roller bellows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39Roller head sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Rotary joint for water . . . . . . . . . . . . . . . . . . . . . . . . . . . .120Roughness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Safety seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71Screw agitator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137Screw compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119Screw locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145Seal supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96Sealing system with no cooling . . . . . . . . . . . . . . . . . . . . .129Seat cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128, 129Seat locking to EN 12756 . . . . . . . . . . . . . . . . . . . . . . . . .141Seat, hydraulically balanced . . . . . . . . . . . . . . . . . . . . . . . .93Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27, 28, 36, 40, 46Seawater desalination . . . . . . . . . . . . . . . . . . . . . . . . . . . .127Sewage works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136Shrink disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94, 146Shut-down seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94Siding pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Sliding velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Snap locator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146Soiled and sea water . . . . . . . . . . . . . . . . . . . . . . . . . . . .116Special waste incineration . . . . . . . . . . . . . . . . . . . . . . . . .134Split mechanical seal . . . . . . . . . . . . . . . . . . . . . . . . .50, 127Spring protection sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . .54Spring, product-protected . . . . . . . . . . . . . . . . . . . . . . . . . .42Spring, Super-Sinus . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143Steam quench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96Sterile process . . . . . . . . . . . . . . . . . . . .43, 52, 92, 103, 138Submersible aerator . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134Submersible motor agitator . . . . . . . . . . . . . . . . . . . . . . . .135Sugar industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137Supply connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94Surface finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145Swimming-pool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140Table of materials . . . . . . . . . . . . . . . . . . . . . .Back cover flapTandem arrangement . . . . . . . . . . . . . . . . . . . . . . . . .131, 135Tank agitator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131Thermosiphon vessel, system . . . . . . .100, 101, 102, 103, 104Threaded pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146Top entry drive . . . . . . . . . . . . . . . . . . . . . . . . .86, 88, 92, 93Torque transmission, drive . . . . . . . . . . . . . . . . . . .46, 94, 146TTV O-rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146Turbo compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119Turbulence losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142Turbulent mixing reactor . . . . . . . . . . . . . . . . . . . . . . . . . .123Vapour pressure curves . . . . . . . . . . . . . . . . . . . . . . . . . . .144Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145Viscosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146Waste water systems . . . . . . . . . . . . . . . . . . . . . . . .134, 135

Product Index Keyword Index

AGSZ . . . . . . . . . . . . . 69, 76, 121AGSZ461... . . . . . . . . . . . 76, 77, 88AGSZ481... . . . . . . . . . . . . . . 76, 86AGSR . . . . . . . . . . . . 69, 76, 77, 90Cartex-GSD . . . . . . 58, 69, 72, 125Cartex-SN,-SNO,-QN/TN,-DN .58, 59CGSH-KD . . . . . . . . . . . 69, 71, 123CGSH-K . . . . . . . . . . . . . . . . 70, 71CSR . . . . . . . . . . . . . . . . . . . 71, 81DGS . . . . . . . . . . . . . . 69, 78, 119DHE . . . . . . . . . . . . . . 97, 114, 121DRE . . . . . . . . . . . . . . . . . . 97, 114DRU . . . . . . . . . . . . . . . . . . 97, 105GSO-D . . . . . . . . . . . . . . . . . 69, 73GSS . . . . . . . . . . . 69, 76, 125, 123H127G115 . . . . . . . . . . . . . . . . . 44H12N . . . . . . . . . . . . . . . . . . . . 44H17GN . . . . . . . . . . . . . . . 44, 127H427GS1/35 . . . . . . . . . . . . . . 120H74(F)-D . . . 48, 49, 122, 128, 131H74F . . . . . . . . . . . . . . . . . . . . 144H74F1 . . . . . . . . . . . . . . . . . . . 129H74G15 . . . . . . . . . . . . . . . . . . 129H75 . . . . . . . . . . 47, 116, 126, 128H75-D . . . . . . . . . . . . . . . . . . . 116H75F . . . . . . . . . . . . . . . . . 47, 128H75G115 . . . . . . . . . . . . . . . . . 128H75G15 . . . . . . . . . . . . . . . . . . . 46H75K . . . . . . . . . . . . . . . . . . . . . 71H75K/H75F . . . . . . . . . . . . . . . 126H75N . . . . . . . . . . . . . . . . . . . . . 46H75N/H75F1 . . . . . . . . . . . . . . 131H75S2/H75F1 / F2 . . . . . . . . . . 124H75S2/U5-H75F2/55 . . . . . . . . 126H75VN . . . . . . . . . . . . . . . . . 47, 71H76(N) . . . . . . . . . . . . . . . . 46, 47H7F . . . . . . . . . . . . . . . . . . 47, 128H7(N) . . . . . . . . . . . . 46, 128, 143H7N/H7F3 . . . . . . . . . . . . . . . . 124H7N/H7N . . . . . . . . . . . . . . . 32, 48H7S2 . . . . . . . . . . . . . . . . . . . . 129H8 . . . . . . . . . . . . . . . . . . . . . . . 66H10 . . . . . . . . . . . . . . . . . . . . . . 66HF(V) . . . . . . . . . . . . . . . . . . . . 128HF-D/93 . . . . . . . . . . . . . . . . . . 118HFV-D4/120 . . . . . . . . . . . . . . .117HGH . . . . . . . . . . . 50, 51, 127, 136HJ42 . . . . . . . . . . . . . . . . . . . . . .43HJ927GN . . . . . . . . . . . . . . . . . . 42HJ92N . . . . . . . . . . . . . . . . . . . 42HJ977GN . . . . . . 42, 133, 134, 137HJ97G . . . . . . . . . . . . . . . . . . . . 42HPS . . . . . . . . . . . . . . . . . . 97, 109HR . . . . 52, 53, 131, 132, 133, 134HRC . . . . . . . . . . . . . . 54, 55, 122HRC-GS3000N . . . . . . . 54, 69, 122HRGS-D . . . . . . . . . . . . . . . . . . . 75HRGS-DC . . . . . . . . . . . . . . . . . . 75HRGS-DD . . . . . . . . . . . . . . . . . . 75HRK-D . . . . . . . . . . . . . . . . . . . . 53HRLS1/80 . . . . . . . . . . . . . . . . . 131HRN . . . . . . . . . . . . . . . . . . . . . 64HRSV-D201/254 . . . . . . . . . . . . 120HRZ/MG1 . . . . . . . . . . . . . . . . . 137HRZ1 . . . . . . . . . . . . . . . . . . . . 52HS...(L)-D . . . . . . . . . . . . . 92, 143HSH(V)(L)-D . . . . . . . . . . . . . . . 93HSH2/215 . . . . . . . . . . . . . . . . 119HSH-D . . . . . . . . . . . . 93, 121, 132HSHF1 . . . . . . . . . . . . . . . 125, 128HSHFB . . . . . . . . . . . . . . . . . . . 130HSHLU-D . . . . . . . . . . . . . . 93, 121HSHU-D . . . . . . . . . . . . . . . 93, 123HSHV . . . . . . . . . . . . . . . . . . . . 127HSMR..(L)-D . . . . . . . . . . . 90, 138HSSHRS8-D . . . . . . . . . . . . . . . 132HST1/119-TA2 . . . . . . . . . . . . . . 117HTS . . . . . . . . . . . . . . . . . . . . . 129LP(-D) . . . . . . . . . . . . . . . . . . . 133M2N . . . . . . . . . . . . . . . . . . . . . 27M3 . . . . . . . . . . . . . . . . . . . . . 138M32 . . . . . . . . . . . . . . . . . 28, 136M37... . . . . . . . . . . . . . . . . . 28, 29M3N . . . . . . . . . . . . . . . . . . . . . 28M3S . . . . . . . . . . . . . . . . . . . . . 28M451 . . . . . . . . . . . . . . . . . . . . 86M461 . . . . . . . . . . . . . . . . . . . . 88M481 . . . . . . . . . . . . . . . . . 86, 87M48-D . . . . . . . . . . . . . . . . . . . 143M56K(L)-D . . . . . . . . . . . . . . . . 88M7 . . . . . . . . . . . . . . 32, 128, 143M74 . . . . . . . . . . . . . . . . . 30, 136M74-D . . . . . . . . . . . . . . . . . . . . 32M74F(-D) . . . . . . . . . . . . . . 31, 33M74.. . . . . . . . . . . . . . . . . . 31, 127

Media


Med ia3 Seal Selection

by Media


Seal selection by

MediaSeal selection and material recommendati-on by media.

The recommendations in the media ta-bles on pages 7 to 24 are based on thetypical case of a seal for a horizontalcentrifugal pump. Other types of machine,installation conditions, modes of opera-tion, designers, manufacturers and ope-rators specifications, local regulationsand so on can result in a different choiceof mechanical seal.For complex sealing duties it is always advisable for the user to consult with ourspecialist engineer.

Explanations to columns 1 to 16:

Column 1:Media designation

Designations of materials to be sealedcomply as far as possible with IUPAC rules (IUPAC = International Union ofPure and Applied Chemistry). Where amaterial has several commonly used de-signations and common names, it is listedin accordance with IUPAC rules withcross-referencing of its other names.Designations are listed in alphabetical order.

Column 2:Notes on the media

G = mixture/group (compound)The media is a mixture of various isomersof one substance or it is a group of subs-tances having close chemical ties.

N = natural productThe medium is a natural product or the refined form of a natural product withchanging proportions of its various consti-tuents. = trade markThe constituents of the media or their proportions in the medium are unknownor are not known exactly.

S = collective termThe generalized mechanical seal recom-mendation is no more than a pointer to asuitable mechanical seal.

TA = TA-Luft relevant medium.The requirements of the TA-Luft air quali-ty control directive have to be considered.

V = impuritiesThe medium contains large quantities ofimpurities due to the peculiarities of theprocess.

Column 3:Concentration

= The media normally occurs in pureform and (as in the case of gases andother media requiring a double mechani-cal seal) the concentration has no bear-ing on the mechanical seal selection.


Column 8:Mechanical seal type

In the case of double or tandem mechani-cal seals, the recommendation applies tothe mechanical seal inboard. The choiceof the outboard seal is dictated by the buffer/-quench medium.

1 = Mechanical seal having O-ring se-condary seals; unbalanced or balanced;rotating spring in contact with the pro-duct, e. g. M3N, M7N, H7N

2 = Mechanical seal having O-ring secondary seals; unbalanced or balan-ced; rotating springs not in contact with the product, e. g. HJ ...

3 = Mechanical seal having O-ring secondary seals; unbalanced or balan-ced; stationary springs not in contact with the product, e. g. HR ...

4 = Same as 3 but no metal parts in the product; e. g. HR31/dH G9

5 = Mechanical seal with elastomer bellows; bellows as, MG...

6 = Mechanical seal with metal bel-lows; such as, MFL

X = Special design e.g. a modified MR-D

Column 9:Materials of construction

for inboard mechanical seals.For an explanation of the material codesand their indices, consult the material key(inside the back cover of this manual).

Column 10:Hazard warnings and reasonsfor recommending a doublemechanical seal or quench.

When compiling these seal selections and material recommendations, it was generally assumed that the machine inquestion is located in a sheltered buildingfrequented occasionally or continually bypersons coming into contact with liquid orvapour leakage of medium from all typesof sealing points. As such, considerationsof health and environmental protectionhad a strong bearing on the choice of seal category.Health hazard and Ignition/Explosioncan lose much of their significance if themachine is installed in the open or inareas rarely frequented by people and

ringed with warning signs. If no mentionis made to either of the reasons 1 to 5 forrecommending a double mechanical sealor a single mechanical seal with quench,it is acceptable to use a single mechani-cal seal.

The decision in favour of a single me-chanical seal must be taken by the user of the machine or the contractor. As he isthe only one to know all conditions and regulations relating to the process and toassess the risks.

Letters in column 10:Health hazard warnings

T = Toxic. Media which in low quantitiescause death or acute or chro-

nic damage to health when inhaled, swal-lowed or absorbed via the skin.

T+ = Very toxic. Media which in very low quantities causedeath or acute or chronic damage tohealth when inhaled, swallowed or absor-bed via the skin.

Xn = Harmful. Media which may cause deathor acute or chronic damage to

health when inhaled, swallowed or absor-bed via the skin.

Xi = Irritant. Non-corrosive media which,through immediate, prolonged

or repeated contact with the skin or mu-cous membrane, may cause inflammati-on.

C = Corrosive. Media which may, on contact with livingtissues, destroy them.

Carcinogenic: Substances and preparati-ons which, if they are inhaled or ingestedor if they penetrate the skin, may inducecancer or increase its incidence.Mutagenic: Substances and preparationswhich, if they are inhaled or ingested or ifthey penetrate the skin, may induce heri-table genetic defects or increase their in-cidence.Labelling of media with carcinogenic ormutagenic effect:R 40: Limited evidence of a carcinogeniceffectR 45: May cause cancer R 46: May cause heritable genetic da-mageR 49: May cause cancer by inhalation

Toxic for reproduction: Substances andpreparations which, if they are inhaled oringested or if they penetrate the skin, mayproduce, or increase the incidence of,non-heritable adverse effects in the pro-geny and/or an impairment of male or fe-male reproductive functions or capacity.Labelling of media with a toxic effect forreproduction:R 60: May impair fertilityR 62: Possible risk of impaired fertilityR 63: Possible risk of harm to the unbornchild

Technical grounds and environ-mental protection

1 = Vapour pressure/gasAt normal working temperatures, the medium has a vapour pressure of >1 bar. If the working temperature lies be-low boiling point (column 15) or if thesealing pressure lies clearly above the vapour pressure, a single mechanical seal may be used with consideration ofthe duty details.

2 = CorrosionThe medium attacks all standard metals.Mechanical seals with no metal parts onproduct side must therefore be used.

3 = Exclusion of airIf the medium contacts or mixes with theatmosphere, it forms an explosive or reacts with a damaging effect on the environment, the medium itself and themachine and mechanical seal.

4 = Lubricating propertiesUnder normal conditions, the medium hassuch poor lubricity that a single mechani-cal seal is at risk from dry running.

5 = IcingNormally the medium is conveyed at temperature below 0 C. Without auxi-liary equipment, the proper functioning of a single mechanical seal is at risk from freezing atmospheric moisture.

6 = LeakageAbsorbed and/or flushed away by thequench, or prevented by a double mechanical seal necessary.

F = Highly flammable. Media which may become hotand finally catch fire in contact

with air at ambient temperature withoutany application of energy, or solid mediawhich may readily catch fire after briefcontact with a source of ignition andwhich continue to burn or to be consumedafter removal of the source of ignition, orliquid media having a very low flash-point,or media which, in contact with water ordamp air, evolve extremely flammable ga-ses in dangerous quantities.

F+ = Extremely flammable. Liquid media having an extremely lowflash-point and a low boiling-point and ga-seous media which are flammable incontact with air at ambient temperatureand pressure

O = Oxidizing. Media which give rise to a hig-hly exothermic reaction in

contact with other substances, particular-ly flammable substances.

E = Explosive. Solid, liquid, pasty or gelati-nous media which may also

react exothermically without atmosphericoxygen thereby quickly evolving gases,and which, under defined test conditions,detonate, quickly deflagrate or upon hea-ting explode when partially confined.

N = Dangerous for the environment.

Media which, when they enterthe environment, would or could presentan immediate or delayed danger for oneor more components of the environment.

(The hazard symbols are according to theEU directive 67/548/EEC, Classification,packaging and labelling of dangeroussubstances of June 1967, status April2004)

U = Insufficient informationThe medium designation is imprecise orthe available information on the mediumis insufficient to assess the serviceabilityof a single mechanical seal. Please notifyus of your experiences.

Med

ia

Column 11:TLV

The values quoted in ml/m3 = ppm (parts per million) are taken from Bulle-tin 30 published by the Senate Commis-sion for Testing Hazardous Materials:Threshold Limit Values and BiologicalMaterial Tolerances.

Additional symbols:

mg: TLVs are quoted in mg/m3 instead of ppm

#, e. g. # 0.5 for barium ...: 0.5 mg/m3,calculated as Ba

* According to the current level of knowledge, the action of this substanceconstitutes a distinct carcinogenic ha-zard for humans. No concentration va-lues are given for this substance in the list because it is still impossible to quo-te any concentration as being safe. With some of these substances, there is even a great risk from absorptionthrough healthy skin. If the use of suchsubstances is unavoidable for technicalreasons, special safety and monitoringmeasures must be taken.

The seal selection takes account ofthe TLV as follows: TLV


Med

ia

Media Mechanical seal Additional information on the medium

Code of Materials andlegend see inside ofback cover.Please observe the noteon page1.

Chemical Temp. Arrange- Materials to Hazard TLV- Melting Boiling DensityFormula C ment EN 12756 warnings value temperature point g/cm3

C CRem

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. mea

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Seal

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Sec.

seal

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gOt

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rmal

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ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

AAcetaldehyde (Ethanal) CH3CHOH TA 100 D 53A 1 Q1(S) B M2 G G Xn,F+,R40,1,3 50 fl 124 21 0,78Acetates Acetic acid estersAcetic acid: CH3COOH TA


Seal selection by

MediaMedia Mechanical seal Additional information on the medium



C CRem

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type

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seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Aminosulfonic acid K D 53A 1 Q1(V) B M1 G G Xi kr 205(Z) 2,1Ammonia NH3


Med

ia




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seal

Sprin

gOt

hers No

rmal

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ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Benzyl butyl phthalate (BBP) Phthalic acid esters

Biphenyl C12H10 TA >75F370 0,95...1,1


Seal selection by




C CRem

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Seal

face

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seal

Sprin

gOt

hers No

rmal

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ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Calcium carbonate Lime powder suspension

Calcium chlorate Ca(ClO3)2


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ia




C CRem

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type

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Seal

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seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Citric acid C6H8O7


Seal selection by




C CRem

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type

Seal

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Seal

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seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Dibutyl phthalate (DBP) Phthalic acid esters

Dichlorobenzenes:1,2-Dichlorobenzene

(ortho-dichlorobenzene) C6H4Cl2 TA


Med

ia




C CRem

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type

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seal

Sprin

gOt

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rmal

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ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

EEdible oil N


Seal selection by




C CRem

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Seal

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seal

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ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Formamide CH3NO TA


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seal

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gOt

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rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Hexane, -n C6H14 TA


Seal selection by




C CRem

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type

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seal

Sprin

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rmal

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ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

LLacquer solvents S


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ia




C CRem

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type

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Seal

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seal

Sprin

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rmal

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ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

MDEA N-Methyl-2,2'-imino- diethanol

MEA N-Methyl ethanolamineMeat juice, meat broth N


Seal selection by




C CRem

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ng

Addit

. mea

sure

s

Seal

type

Seal

face

Seal

face

Sec.

seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Naphthylamines:1-Naphthylamine C10H9N TA Sch


Med

ia




C CRem

ark

Conc

entra

tion

%

Auxil

. pipi

ng

Addit

. mea

sure

s

Seal

type

Seal

face

Seal

face

Sec.

seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Perchlorobenzene Hexachlorobenzene

Perchloroethane Hexachloroethane

Perchloroethylene Tetrachloroethylene

Perhydrol Hydrogen peroxide,30% solution

Petrol (Gasoline) unleaded, TA,regular and supergrade G


Seal selection by




C CRem

ark

Conc

entra

tion

%

Auxil

. pipi

ng

Addit

. mea

sure

s

Seal

type

Seal

face

Seal

face

Sec.

seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Potassium chloride KCl


Med

ia




C CRem

ark

Conc

entra

tion

%

Auxil

. pipi

ng

Addit

. mea

sure

s

Seal

type

Seal

face

Seal

face

Sec.

seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

R 610 (Decafluorobutane) C4F10 TA >40 D 53A 1 Q1(S) B M4 G G 1,4 ga 2 (+)R 1112a 20 D 53A 1 Q1(S) B M4 G G 1,4R 1113 (Chlorotrifluoroethylene) CCIF3 TA >40 D 53A 1 Q1(S) B M4 G G T,1,4,F+ ga 158 28 (+)R 1122 (Chlorodifluoroethylene) CHCIF2 TA >40 D 53A 1 Q1(S) B M4 G G 1,4,F+,N ga 138 18 (+)R 1132a (1,1-Difluoroethylene) C2H2F2 TA >40 D 53A 1 Q1(S) B M4 G G Xn,R40,1,4,F+ ga 144 86 (+)RC 318 (Octafluorocyclobutane) C4F8 TA


Seal selection by




C CRem

ark

Conc

entra

tion

%

Auxil

. pipi

ng

Addit

. mea

sure

s

Seal

type

Seal

face

Seal

face

Sec.

seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Soiled water WaterSoot-water mixture


Med

ia




C CRem

ark

Conc

entra

tion

%

Auxil

. pipi

ng

Addit

. mea

sure

s

Seal

type

Seal

face

Seal

face

Sec.

seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Terphenyls (diphenyl benzenes): C18H14m-Terphenyl (1,3-Diphenyl benzene) C18H14 Sch


Seal selection by




C CRem

ark

Conc

entra

tion

%

Auxil

. pipi

ng

Addit

. mea

sure

s

Seal

type

Seal

face

Seal

face

Sec.

seal

Sprin

gOt

hers No

rmal

cond

ition

1 2 3 4 5

1 2 3 4 5 6 7 8 10 11 12 13 14 15

Vinyl chloride C2H3Cl TA

Standard


Standard Sea ls

25 Mechanical Sealsfor Pumps and Compressors

Plain shafts, rotating spring,unbalancedM2N . . . . . . . . . . . . . . . . . . . . . . . 27M3N . . . . . . . . . . . . . . . . . . . . . 28/29M7N . . . . . . . . . . . . . . . . . . . . . 30/31M74-D . . . . . . . . . . . . . . . . . . . 32/33MG9 . . . . . . . . . . . . . . . . . . . . . 34/35MG1 . . . . . . . . . . . . . . . . . . . . . 36/37MF95N . . . . . . . . . . . . . . . . . . . . . 39

Plain shafts, rotating spring,balancedMFL85N . . . . . . . . . . . . . . . . . . 40/41HJ92N . . . . . . . . . . . . . . . . . . . 42/43Mtex . . . . . . . . . . . . . . . . . . . 60/61

Stepped shafts, rotating spring,balancedH12N . . . . . . . . . . . . . . . . . . . . 44/45H7N . . . . . . . . . . . . . . . . . . . . . 46/47H74-D . . . . . . . . . . . . . . . . . . . . 48/49

Stationary spring, balancedHR . . . . . . . . . . . . . . . . . . . . . . 52/53HRC..N . . . . . . . . . . . . . . . . . . . 54/55Unitex . . . . . . . . . . . . . . . . . . 56/57Cartex . . . . . . . . . . . . . . . . . . 58/59SH . . . . . . . . . . . . . . . . . . . . . . . . . 62SH (-D) . . . . . . . . . . . . . . . . . . . . . 63HRN . . . . . . . . . . . . . . . . . . . . . . . . 64MFL65 . . . . . . . . . . . . . . . . . . . . . . 65H10/H8 . . . . . . . . . . . . . . . . . . . . . 66

Split sealHGH . . . . . . . . . . . . . . . . . . . . . 50/51

26 B u r g m a n n K o n s t r u k t i o n s m a p p e 1 5 . 5


Single sealUnbalancedConical springDependenton direction of rotationTo EN 12756*The M2 mechanical seal range featuresa spring loaded solid carbon graphite sealface. They are cost effective for basicapplications such as circulating pumpsfor water and heating systems.

Operating limits (see note on page 1)

d1 = 6 ... 38 mmm0.25" ... 1.5"p1 = 10 bar 145 PSIt = 20 ... 180 C m4 F ... 355 Fvg = 15 m/s 50 ft/sAxial movement: 1.0 mm

M2NItem Part no. Descriptionno. to DIN

242501.1 472 Seal face1.2 412.1 O-ring1.3 474 Thrust ring1.4 478 Righthand spring1.4 479 Lefthand spring2 475 Type G9 stationary seat3 412.2 O-ring

For plain shafts, spring rotating

M2N

M2N

Seal designations

Materials (to EN 12756)

Seal face: BStationary seats G4: Q1; S (Q1)

G6: Q1; S (Q1)G9: Q1; Q2; S

Stationary seatsRotating unit G4 G6 G9M2 M2 M2N4 M2N

Stationary seats

G4

d1f

6*8*

10*12*14*15*16*18*20*22*24*25*26*28*30*32*35*38*

d3151820222527273032353840414347485356

d6

171921

232729313334

37

d7

212325

273335373940

43

d83333333333

d1111.815.515.517.520.520.522.024.029.529.532.032.034.036.039.242.246.249.2

d1216.019.219.221.624.624.628.030.035.035.038.038.040.042.045.048.052.055.0

db8

1113161819212326283031323537394347

l1N

404040

404545455050

50

l3

17.517.517.5

19.520.522.023.525.026.5

26.5

l5f

1.51.51.5

1.52.02.02.02.02.0

2.0

l64444555555

l7f

8.58.58.5

8.59.09.09.09.09.0

9.0

l8m

17.517.517.5

17.519.519.519.519.519.5

19.5

l9m

10.010.010.0

10.011.511.511.511.511.5

11.5

l10

7.57.57.5

7.58.58.58.58.58.5

8.5

l12 l6.5*8.0*7.5*8.0*8.0*7.5*8.5*9.0*8.5*8.5*8.5*8.5*9.0*

10.0*11.5*13.0*13.5*13.0*

l145.67.06.67.0*7.0*6.67.58.07.57.57.57.58.09.0

10.510.511.010.3

l151.21.21.21.21.21.21.51.51.51.51.51.51.51.51.51.51.51.5

l163.83.83.83.83.83.85.05.05.05.05.05.05.05.05.05.05.05.0

l2110.915.515.916.016.017.419.020.522.023.525.026.526.526.525.028.528.532.0

l28

6.66.66.6

6.67.57.57.57.57.5

7.5

b

8888888888

Rn

1.21.21.21.21.21.21.51.51.51.51.51.51.51.51.51.51.51.5

*) Installation length differs from G4-seats

G6EN 12756

Unquoted dimensions as per Item 2

1) l3 valid for M2N,1) for M2 series l21 is valid (see table)

l 22

d 13


M3N

Single sealUnbalancedConical springDependenton direction of rotationTo EN 12756*The M3 mechanical seals are immenselypopular. Extremely rugged and reliable,they cover a wide spectrum of applica-tions in water pumps, sewage pumps,submerged pumps, chemical pumps, etc.


d1 = 6 ... 80 mm m0.25" ... 3.125"(M37G from d1 = 16 mm /M37 up to d1 = 55 mm)

p1 = 10 bar m145 PSIt = 20 ... 180 C m4 F... 355 F

(M37 up to 120 C)vg = 10 (15) m/s m33 (50) ft/sAxial movement: 1.0 mm

M3NItem Part no. Descriptionno. to DIN

242501.1 472 Seal face1.2 412.1 O-ring1.3 474 Thrust ring1.4 478 Righthand spring1.4 479 Lefthand spring2 475 Type G9 stationary seat3 412.2 O-ring


G4

M32Item nos and descriptions as for typeM3N, but with the seal face (carbon)shrink-fitted into the seal face carrier(Item no. 1.1).

Stationary seats

Unquoted dimensions as for Item 2.

G13

G6 (G30)EN 12756

G9EN 12756

Combination of materials and seal types

1) l3 valid for M3...N-types1) for M3-series l21 is valid (see table).

Stationary seatsG4 G13 G63) G9

S Q1 A;B S Q1 A;B Q1(Q2) (Q2) (Q2)

M3 (S) M3 M3N M32 (A;B) M32 M32 M32N4 M32N4 M32NM37 (U1) M37 M37 M37N4 M37N M37NM37G M37G M37G M37GN4 M37GN M37GN(Q12; Q22;U22)

3) Stationary seat G6 is also available in materials A and B (as style G30) (longer overall length than G6!).All material designations according to EN 12756. See back cover.

Rotatingunit(sealface)

l23

d 13


M3N

M37(d1 max. 55 mm)Item nos and descriptions as for typeM3N, but with the seal face brazed(tungsten carbide) to the seal face carrier(Item no. 1.1).

M37G(d1 min. 16 mm)Item nos and descriptions as for typeM3N, but with the seal face shrink-fitted (silicon carbide) into the seal facehousing (Item no. 1.1).

d314181921232426293133353637404346474953565959616466697176788384889098

100

d6

171921

232729313334

37394242444951

5456596265677072757781838895

d7

212325

273335373940

43454848505658

61636670737578808385909297

105

d8333333333333334444444444444444

d111)

11.515.515.517.520.520.522.024.029.529.532.032.034.036.039.242.2

46.249.252.253.3

55.359.760.8

66.569.571.5

76.582.783.090.295.2

d121)

16.019.219.221.624.624.628.030.035.035.038.038.040.042.045.048.0

52.055.058.062.0

64.068.469.3

75.478.480.4

85.491.592.099.0

104.0

d1316182022242526313436383940424446474954565859616466697178798385889098

103

db8

11131618192123262830313235373940434549525255586164666971747780838893

l1N

404040

404545455050

50505555555555

6060606070707070708080808090

l3m

15.516.016.5

18.019.522.021.523.526.5

26.526.528.528.528.533.536.0

38.539.546.045.047.049.055.055.055.055.055.057.062.061.8

l5f

1.51.51.5

1.52.02.02.02.02.0

2.02.02.02.02.02.02.0

2.02.02.02.52.52.52.52.52.52.52.52.52.53.0

l6444455555555556666666666667777

l7f

8.58.58.5

8.59.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.0

l8n

17.517.517.5

17.519.519.519.519.519.5

19.519.519.519.519.522.022.0

22.022.022.023.023.023.023.023.023.023.026.026.026.026.2

l9m

10.010.010.0

10.011.511.511.511.511.5

11.511.511.511.511.514.014.0

14.014.014.015.015.015.015.015.015.015.018.018.018.018.2

l10

7.57.57.5

7.58.58.58.58.58.5

8.58.58.58.58.5

10.010.0

10.010.010.010.512.012.012.012.012.012.012.512.512.513.0

l11f9.09.09.0

10.010.011.011.512.512.512.512.512.513.014.014.014.0

14.514.514.517.0

17.017.017.0

18.018.018.0

18.019.018.018.019.0

l126.58.07.56.56.57.58.59.08.58.58.58.59.0

10.011.511.512.012.011.311.813.213.212.812.812.813.514.514.514.514.214.214.914.215.216.2

l137.17.17.17.67.68.69.0

10.09.59.59.59.5

10.011.011.011.0

11.511.511.514.3

14.314.314.3

15.315.315.3

15.316.015.315.316.3

l145.67.06.65.65.66.67.58.07.57.57.57.58.09.0

10.510.5

11.010.310.812.0

11.611.611.6

13.313.313.3

13.013.713.014.015.0

l151.21.21.21.21.21.21.51.51.51.51.51.51.51.51.51.5

1.51.51.52.02.02.02.02.0

2.02.02.0

2.02.02.02.02.0

l163.83.83.83.83.83.85.05.05.05.05.05.05.05.05.05.0

5.05.05.06.0

6.06.06.0

6.06.06.0

6.06.06.06.06.0

l21f10.515.515.515.515.515.517.518.520.021.523.024.524.524.524.528.0

.28.031.034.035.0

.36.542.043.0

.47.050.051.0

.52.053.054.055.058.0

l22n11.916.916.917.417.417.419.520.522.023.525.026.526.526.525.028.5

28.532.234.737.3

39.244.745.7

49.052.055.0

54.355.356.356.359.3

l23s

16.5

16.518.019.020.522.023.523.524.524.528.0

28.031.034.035.0

36.542.043.0

47.050.051.0

52.052.754.054.058.0

l28

6.66.66.6

6.67.57.57.57.57.5

7.57.57.57.57.59.09.0

9.09.09.09.5

11.011.011.011.011.011.011.311.311.312.0

b2)

(8)(8)(8)

(8)(8)(8)(8)(8)(8)

(8)(8)(8)(8)(8)7,5(8)

7,5(8)(8)(8)8,0(8)(8)(8)(8)(8)(8)(10)(10)

10,0

Rf1.21.21.21.21.21.21.51.51.51.51.51.51.51.51.51.51.51.51.51.52.52.52.52.52.52.52.52.52.52.52.52.52.52.52.5

1) Fitting dimensions d11 and d12 only apply to type M37G with D1 >16 mm2) Dimensions in brackets lie either above or below L1N*) According to EN 12756

For the spring-loaded units the following measures apply:M3-series: I21; M32-series: I22; M37..-series: I23; M3..N-series: I3.

d16*8*

10*12*14*15*16*18*20*22*24*25*26*28*30*32*33*35*38*40*42*43*45*48*50*53*55*58*60*63*65*68*70*75*80*

4 screws eachoffset 90


Combination of materials

For plain shafts, spring(s) rotating

M7N

Single sealUnbalancedIndependentof direction of rotationTo EN 12756*The M7 mechanical seal range is de-signed for universal application and idealsuited for standardisation. The loosely in-serted seal faces are easily exchanged,permitting all combinations of materialsand stock rationalisation. With Super-Sinus spring (see page 143).


d1 = 14 ... 200 mm m0.55 ... 8p1 = 16 (25) bar m230 (360) PSIt = 50 ... 220 C

= 58 F ... 430 Fvg = 20 m/s m66 ft/s

Axial movement:d1 up to 25 mm: 1.0 mmd1 28 bis 63 mm: 1.5 mmd1 ab 65 mm and above: 2.0 mm

Seal code explanation

d1 = 53 mm Seal face made of cast Cr-steel (S) Type G13 stationary seat made of

carbon graphite (B) Viton O-rings (V) Metal parts including spring material

1.4571 (G) Rotating unit M74 M74/53G13SBVGGThe basic description M74N/53 SBVGGindicates a G9 seat, installation dimen-sions to EN 12756.

M7N(d1 = max. 100 mm)

Item Part no. Descriptionno. to DIN

242501.1 472 Seal face1.2 485 Drive collar1.3 474 Thrust ring1.4 412.1 O-ring1.5 477 Spring1.6 904 Set screw2 475 Type G9 stationary seat3 412.2 O-ring

G4

M74Dimensions, item nos and descriptionsas for M7N, but with multiple springs(Item no. 1.5). Preferably for d1 >100mm.

Stationary seats

Unquoted dimensions as for item no. 2

G13

G9EN 12756

G6EN 12756

1) d1 > 100 mm : 302) d1 > 100 : +0,13) d1 > 100 : H7

4 set screws with cone points(standardarrangement).

Torque transmissiond1 >100 mm

Only M78N:G9

S Q1B A Q1

(Designations to EN 12756, see insidethe back cover of this manual)

Stationary seals

G4 G13mmmG9 G6

Q1 A;B A;B Q1 Q1(Q2) (Q2) (Q2)

S Q1 Q2

Seal faces

G16I1K is shorterthan specifiedby EN 12756


M7N

M7Fd1 max. 100 mm

M74Fd1 = 14 ... 200 mm

Dimensions, item nos and descriptionsas for type M7N, but with pumpingscrew. Dependent on direction ofrotation!

M7 S2d1 max. 100 mm

M74 S2d1 = 28 ... 200 mm

Dimensions, item nos and descriptionsas for type M7N, but with drive key.(without item no. 1.6)

M78Nd1 = 18 ... 100 mmt max. 180 C

Items nos, description and unspecifieddimensions as for M7N. Design of therotating portion especially for secondarysealing element made of PTFE (T).

d1f14*16*18*20*22*24*25*28*30*32*33*35*38*40*43*45*48*50*53*55*58*60*63*65*68*70*75*80*85*90*95*

100*105*110*115*120*125*130*135*140*145*150*155*160*165*170*175*180*185*190*195*200*

d3252733353739404345474850555760626567707279818486899199

104109114119124138143148153158163168173178183191196201206211216221226231236

d6n21.023.027.029.031.033.034.037.039.042.042.044.049.051.054.056.059.062.065.067.070.072.075.077.081.083.088.095.0

100.0105.0110.0115.0122.2128.2136.2138.2142.2146.2152.2156.2161.2168.2173.2178.2183.2188.2193.2207.5212.5217.5222.5227.5

d7n25.027.033.035.037.039.040.043.045.048.048.050.056.058.061.063.066.070.073.075.078.080.083.085.090.092.097.0

105.0110.0115.0120.0125.0134.3140.3148.3150.3154.3158.3164.3168.3173.3180.3185.3190.3195.3200.3205.3219.3224.3229.3234.3239.3

d83333333333334444444444444444444455555555555555555555

d1120.522.024.029.529.532.032.036.039.242.244.246.249.252.253.355.359.760.863.866.569.571.574.576.582.783.090.295.2

100.2105.2111.6114.5

d1224.628.030.035.035.038.038.042.045.048.050.052.055.058.062.064.068.469.372.375.478.480.483.485.491.592.099.0

104.0109.0114.0120.3123.3

d2416182022242627303234353740424547505255576062656770727782879297

102108113118123128133138143148153158163168173178183188193198203

d31

32343638394244464749545659616466697178808385889099

104109114119124

ds3436384042444547495151545961656669717576838588959395

105109114119124129143148153158163168173178183188196201206211216221226231236241

l1Kl35.035.037.537.537.540.040.042.542.542.542.542.545.045.045.045.045.047.547.547.552.552.552.552.552.560.060.060.060.065.065.065.067.067.067.067.067.067.067.067.067.069.080.080.080.080.080.084.084.084.084.084.0

l325.025.026.026.026.028.528.531.031.031.031.031.031.031.031.031.031.032.532.532.537.537.537.537.534.542.042.041.841.846.847.847.847.047.047.047.047.047.047.047.047.047.056.056.056.056.056.056.056.056.056.056.0

l5i1.51.52.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.52.52.52.52.52.52.52.52.52.53.03.03.03.03.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0

l644555555555566666666666677777777

1010101010101010101012121212121212121212

l7i8.58.59.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.0

l8n17.517.519.519.519.519.519.519.519.519.519.519.522.022.022.022.022.023.023.023.023.023.023.023.026.026.026.026.226.226.225.225.230.030.030.030.030.030.030.030.030.032.034.034.034.034.034.038.038.038.038.038.0

l9n10.010.011.511.511.511.511.511.511.511.511.511.514.014.014.014.014.015.015.015.015.015.015.015.018.018.018.018.218.218.217.217.220.020.020.020.020.020.020.020.020.022.024.024.024.024.024.028.028.028.028.028.0

l107.57.58.58.58.58.58.58.58.58.58.58.5

10.010.010.010.010.010.512.012.012.012.012.012.012.512.512.513.015.015.015.015.0

l11i10.011.512.512.512.512.512.514.014.014.014.514.514.514.517.017.017.017.017.018.018.018.018.018.019.018.018.019.019.019.020.020.0

l12i6.58.59.08.58.58.58.5

10.011.511.512.012.011.311.813.212.812.812.813.514.514.514.514.214.214.914.215.216.216.016.017.017.0

l13i7.69.0

10.09.59.59.59.5

11.011.011.011.511.511.511.514.314.314.314.314.315.315.315.315.315.316.015.315.316.316.316.317.317.3

l14i5.67.58.07.57.57.57.59.0

10.510.510.511.010.310.812.011.611.611.612.313.313.313.313.313.013.713.014.015.014.814.815.815.8

l151.21.21.51.51.51.51.51.51.51.51.51.51.51.52.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0

l163.83.85.05.05.05.05.05.05.05.05.05.05.05.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.0

l286.66.67.57.57.57.57.57.57.57.57.57.59.09.09.09.09.09.5

11.011.011.011.011.011.011.311.311.312.014.014.014.014.0

b44556666666666666666888888888

1010101010101010101010101012121212121212121212

fi66777888888888888888999999

1010101010101010101010101010101012121212121212121212

f1f

3.53.53.53.53.54.04.04.04.04.04.04.04.04.04.04.54.54.55.55.55.55.54.05.55.55.55.58.08.08.0

mxM5M5M5M5M5M5M5M6M6M6M6M6M6M6M6M6M6M6M6M6M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8

10101212121212131313131313131313131313131313131313161616162020202020202020202020202024242424242424242424

umax. td1.51.51.11.11.51.51.51.51.51.51.51.51.51.51.51.51.51.51.51.51.91.91.91.91.91.91.91.91.92.32.32.32.32.32.32.32.32.32.32.32.32.32.12.12.12.12.12.12.12.12.12.1 d 1

> 2

00 o

n re

ques

t

d1 = 68: mx = M6Drive keyDIN 6885

u


Torque transmission

For plain shafts, springs rotating

M74-D

Double sealUnbalancedIndependentof direction of rotationMultiple springsDouble seals in the M74-D series havethe same design-features as the M7family of single seals (easy-to-replaceseal faces, etc.). Apart from the installati-on length of the drive collar, all fittingdimensions (d1 100 mm 2.0 mm

Combination of materials

Dimensions are identical throughout theM7 series, so it is possible to use thesame face materials as for type M7N(see page 30).

Double seals to EN 12756

EN specifies single seals in a back-to-back arrangement. It is possible, there-fore, to choose from the following combi-nations: unbalanced/unbalanced (e. g. M7N/M7N) balanced/balanced (e. g. H7N/H7N) unbalanced/balanced (e. g. M7N/H7N). Please consult the single-sealtables for dimensions.

Spring loaded drive pin: M74-D22

drive pin 1.4.1 disk 1.4.2 thrust spring 1.4.3

For d1 >100 mm: 4 set screws withcone points (standard arrangement)

2 )

3 )

1) d1 > 100 mm: 302) d1 > 100: +0,13) d1 > 100: H7

4 screws eachoffset 90


M74

-DM74F-DDimensions, item nos and descriptionsas for type M74-D, but with pumpingscrew (Item no. 1.4). Dependent ondirection of rotation!Torque transmission via set screws withcone points.

d11820222425283032333538404345485053555860636568707580859095

100105110115120125130135140145150155160165170175180185190195200

d333353739404345474850555760626567707279818486899199

104109114119124138143148153158163168173178183191196201206211216221226231236

d6f27.029.031.033.034.037.039.042.042.044.049.051.054.056.059.062.065.067.070.072.075.077.081.083.088.095.0

100.0105.0110.0115.0122.2128.2136.2138.2142.2146.2152.2156.2161.2168.2173.2178.2183.2188.2193.2207.5212.5217.5222.5227.5

d7f33.035.037.039.040.043.045.048.048.050.056.058.061.063.066.070.073.075.078.080.083.085.090.092.097.0

105.0110.0115.0120.0125.0134.3140.3148.3150.3154.3158.3164.3168.3173.3180.3185.3190.3195.3200.3205.3219.3224.3229.3234.3239.3

d833333333334444444444444444444455555555555555555555

d944444444444444444455555555555577777777777777777777

d11i

24.029.529.532.032.036.039.242.244.246.249.252.253.355.359.760.863.866.569.571.574.576.582.783.090.295.2

100.2105.2111.6114.5

d1230.035.035.038.038.042.045.048.050.052.055.058.062.064.068.469.372.375.478.480.483.485.491.592.099.0

104.0109.0114.0120.3123.3

ds

42444547495151545961656669717576838588959395

105109114119124129143148153158163168173178183188196201206211216221226231236241

l1g

61.061.061.061.061.062.062.062.062.062.069.070.070.070.070.073.073.073.086.086.085.085.091.092.092.092.592.592.590.590.5

108.0110.0110.0110.0110.0110.0110.0110.0110.0114.0127.0127.0127.0127.0127.0135.0135.0135.0135.0135.0

l33838383838393939393941424242424343435656555555565656565656566870707070707070707079797979797979797979

l4f19.019.019.019.019.019.519.519.519.519.520.521.021.021.021.021.521.521.528.028.027.527.527.528.028.028.028.028.028.028.034.035.035.035.035.035.035.035.035.035.039.539.539.539.539.539.539.539.539.539.5

l52.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.52.52.52.52.52.52.52.52.52.53.03.03.03.03.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0

l6555555555566666666666677777777

1010101010101010101012121212121212121212

l9999999999999999999999999999999

l8f

19.519.519.519.519.519.519.519.519.519.522.022.022.022.022.023.023.023.023.023.023.023.026.026.026.026.226.226.225.225.230.030.030.030.030.030.030.030.030.032.034.034.034.034.034.038.038.038.038.038.0

l9f

11.511.511.511.511.511.511.511.511.511.514.014.014.014.014.015.015.015.015.015.015.015.018.018.018.018.218.218.217.217.220.020.020.020.020.020.020.020.020.022.024.024.024.024.024.028.028.028.028.028.0

l108.58.58.58.58.58.58.58.58.58.5

10.010.010.010.010.010.512.012.012.012.012.012.012.512.512.513.015.015.015.015.0

l11i

12.512.512.512.512.514.014.014.014.514.514.514.517.017.017.017.017.018.018.018.018.018.019.018.018.019.019.019.020.020.0

l129.08.58.58.58.5

10.011.511.512.012.011.311.813.212.812.812.813.514.514.514.514.214.214.914.215.216.216.016.017.017.0

l1310.09.59.59.59.5

11.011.011.011.511.511.511.514.314.314.314.314.315.315.315.315.315.316.015.315.316.316.316.317.317.3

l148.07.57.57.57.59.0

10.510.510.511.010.310.812.011.611.611.612.313.313.313.313.313.013.713.014.015.014.814.815.815.8

l151.51.51.51.51.51.51.51.51.51.51.51.52.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.02.0

555555555555666666666666666666

l16 l287.57.57.57.57.57.57.57.57.57.59.09.09.09.09.09.5

11.011.011.011.011.011.011.311.311.312.014.014.014.014.0

l3117.017.017.017.017.017.517.517.517.517.518.519.019.019.019.019.519.519.523.523.524.524.524.523.525.525.525.025.525.025.030.531.531.531.531.531.531.531.531.531.535.535.535.535.535.535.535.535.535.535.5

l351515151515151515151515151515151515151919191919191919191919192222222222222222222222222222222222222222

mxM5M5M5M5M5M6M6M6M6M6M6M6M6M6M6M6M6M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8M8

tg

3.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.53.5


For plain shafts, rotating spring

MG9

Single sealUnbalancedIndependent of directionof rotationElastomer bellowsThe MG9 is (US Patent No. 6,220,601)designed for medium-range pressuresand loads. Within its operating limits itcan be put to universal use in pumpsthanks to the following attributes: for all fitting lengths only one bellows

unit for each size of diameter length compensation by means of a

conical spring of required length, withsingle easy-to-fit clamp-type connector

no need to change existing pumpinstallation spaces

smallest external diameter of all bel-lows seals on the world market

no torsion on bellows and spring no adhesive joints self-centering conical spring (suppor-

ted directly on the shaft collar withoutan additional washer)

technical approval issued by a top-name, global pump manufacturer

compact, unsplit bellows unit with sta-tionary seal face for reliable installati-on and operation (deposits betweenthe bellows and the seal face are im-possible, ruling out all risk of misalign-ment)

St

anda

rd

Spec

ial

SeatsMG9Item Part No. Description

DIN24250

1.1 472 Seal face1.2 481 Bellows1.3 485 Driver collar1.4 484.1 L ring1.5 474 Washer2 477 Spring3 475 Seat4 412 Corner sleeve


d1 = 10 ... 100 mm 0.375 ... 4p1*= 8 (12) bar 116 (174) PSIt* = 20 ... +90 (140) C

= 4 ... +194 (284) Fvg = 10 m/s 33 ft/spermissible axial movement: 0.5 mm*) dependent on the medium, size andmaterials

Materials

Seal component Material(DIN)

Seal face Carbon (B) SiC (Q1)

Seat Ceramic (V) SiC (Q1)

Bellows / Perbunan (P) Corner Viton (V) sleeve EPDM (E) Spring 1.4310 (F)

1.4571 (G) Driver collar / 1.4301 (F) L ring 1.4571 (G)

1.4401

G50Euro standard

G55US standard

G60EN 12756


d1 d6 d7 d14 d16 da dbi l1t l1K l1N l1S l5i l6 l17 l28 l2910 17 21 11.0 24.60 19.6 13.0 53.0 32.5 40 34.0 1.5 4 7.5 6.6 9.012 19 23 13.5 27.80 21.6 15.0 53.0 32.5 40 34.0 1.5 4 7.5 6.6 9.014 21 25 17.0 30.95 24.0 18.0 54.5 35.0 40 35.5 1.5 4 9.0 6.6 10.515 17.0 30.95 25.0 19.0 54.5 35.5 9.0 10.516 23 27 17.0 30.95 26.5 20.0 54.5 35.0 40 35.5 1.5 4 9.0 6.6 10.518 27 33 20.0 34.15 29.0 22.0 54.5 37.5 45 35.5 2.0 5 9.0 7.5 10.520 29 35 21.5 35.70 31.5 24.5 54.5 37.5 45 35.5 2.0 5 9.0 7.5 10.522 31 37 23.0 37.30 33.0 27.0 54.5 37.5 45 35.5 2.0 5 9.0 7.5 10.524 33 39 26.5 40.50 37.0 29.0 54.5 40.0 50 35.5 2.0 5 9.0 7.5 10.525 34 40 26.5 40.50 38.0 30.0 54.5 40.0 50 35.5 2.0 5 9.0 7.5 10.528 37 43 29.5 47.65 41.0 34.0 72.0 42.5 50 45.0 2.0 5 10.5 7.5 12.030 39 45 32.5 50.80 43.0 36.0 72.0 42.5 50 45.0 2.0 5 10.5 7.5 12.032 42 48 32.5 50.80 45.0 38.0 72.0 42.5 55 45.0 2.0 5 10.5 7.5 12.033 42 48 36.5 54.00 46.0 39.0 72.0 42.5 55 45.0 2.0 5 10.5 7.5 12.035 44 50 36.5 54.00 48.0 41.0 72.0 42.5 55 45.0 2.0 5 10.5 7.5 12.038 49 56 39.5 57.15 52.5 44.5 72.0 45.0 55 45.0 2.0 6 10.5 9.0 12.040 51 58 42.5 60.35 55.5 47.5 72.0 45.0 55 45.0 2.0 6 10.5 9.0 12.043 54 61 46.0 63.50 58.5 50.5 83.0 45.0 60 53.0 2.0 6 10.5 9.0 12.045 56 63 46.0 63.50 60.5 52.5 83.0 45.0 60 53.0 2.0 6 10.5 9.0 12.048 59 66 49.0 66.70 64.0 56.0 83.0 45.0 60 53.0 2.0 6 10.5 9.0 12.050 62 70 52.0 69.85 66.0 58.0 84.5 47.5 60 54.5 2.5 6 12.0 9.5 13.553 65 73 55.5 73.05 69.0 61.0 84.5 47.5 70 54.5 2.5 6 12.0 11.0 13.555 67 75 58.5 76.20 71.0 63.0 84.5 47.5 70 54.5 2.5 6 12.0 11.0 13.558 70 78 61.5 79.40 76.0 66.0 84.5 52.5 70 54.5 2.5 6 12.0 11.0 13.560 72 80 61.5 79.40 78.0 68.0 84.5 52.5 70 54.5 2.5 6 12.0 11.0 13.563 75 83 82.0 71.5 52.5 70 2.5 6 11.0 65 77 85 68.0 92.10 84.0 73.5 86.0 52.5 80 65.0 2.5 6 14.5 11.0 16.068 81 90 71.0 95.25 87.0 76.5 86.0 52.5 80 65.0 2.5 7 14.5 11.3 16.070 83 92 71.0 95.25 89.0 79.0 86.0 60.0 80 65.0 2.5 7 14.5 11.3 16.075 88 97 77.5 101.60 95.0 85.0 89.0 60.0 80 68.0 2.5 7 14.5 11.3 16.080 95 105 84.0 114.30 101.5 91.5 99.0 60.0 90 76.0 3.0 7 18.5 12.0 20.085 100 110 87.0 117.50 99.0 60.0 90 76.0 3.0 7 18.5 14.0 20.090 105 115 93.5 123.85 111.5 103.0 103.0 65.0 90 79.0 3.0 7 18.5 14.0 20.095 110 120 96.5 127.00 103.0 65.0 90 79.0 3.0 7 18.5 14.0 20.0

100 115 125 103.0 133.35 122.5 114.0 106.0 65.0 90 82.0 3.0 7 18.5 14.0 20.0

d1 d61 d71 da db il14 l15 l41 l51 l610.375 0.625 0.875 0.740 0.492 1.125 1.500 0.313 0.050 0.2500.500 0.750 1.000 0.878 0.630 1.125 1.500 0.313 0.050 0.2500.625 0.937 1.250 1.043 0.787 1.281 1.718 0.406 0.050 0.3440.750 1.062 1.375 1.161 0.905 1.281 1.718 0.406 0.050 0.3440.875 1.187 1.500 1.299 1.063 1.343 1.781 0.406 0.050 0.3441.000 1.312 1.625 1.496 1.200 1.437 2.000 0.437 0.050 0.3751.125 1.437 1.750 1.634 1.358 1.500 2.062 0.437 0.050 0.3751. 250 1.563 1.875 1.772 1.496 1.500 2.062 0.437 0.050 0.3751.375 1.687 2.000 1.890 1.614 1.562 2.124 0.437 0.050 0.3751.500 1.813 2.125 2.067 1.752 1.562 2.124 0.437 0.050 0.3751.625 2.000 2.375 2.244 1.909 1.875 2.500 0.500 0.050 0.4371.750 2.125 2.500 2.382 2.028 1.875 2.500 0.500 0.050 0.4371.875 2.250 2.625 2.520 2.165 2.000 2.625 0.500 0.050 0.4372.000 2.375 2.750 2.598 2.283 2.000 2.625 0.500 0.050 0.4372.125 2.375 3.000 2.795 2.421 2.249 2.937 0.562 0.050 0.5002.250 2.437 3.125 2.992 2.559 2.249 2.937 0.562 0.050 0.5002.375 2.563 3.250 3.071 2.697 2.375 3.062 0.562 0.050 0.5002.500 2.687 3.375 3.228 2.834 2.375 3.062 0.562 0.050 0.5002.625 2.812 3.375 3.307 2.953 2.562 3.375 0.625 0.100 0.5622.750 2.937 3.500 3.504 3.110 2.562 3.375 0.625 0.100 0.5622.875 3.062 3.750 3.642 3.228 2.687 3.500 0.625 0.100 0.5623.000 3.187 3.875 3.760 3.366 2.687 3.500 0.625 0.100 0.5623.125 3.312 4.000 4.000 3.583 2.968 3.906 0.781 0.100 0.6563.250 3.437 4.125 2.968 3.906 0.781 0.100 0.6563.375 3.562 4.250 2.968 3.906 0.781 0.100 0.6563.500 3.687 4.375 4.390 3.937 2.968 3.906 0.781 0.100 0.6563.625 3.812 4.500 3.093 4.031 0.781 0.100 0.6563.750 3.937 4.625 4.646 4.252 3.093 4.031 0.781 0.100 0.6563.875 4.062 4.750 3.218 4.156 0.781 0.100 0.6564.000 4.187 4.875 4.921 4.567 3.218 4.156 0.781 0.100 0.656

d1 d1 d14 d16 da dbi l1 tl1S l17 l290.375 9.53 11.0 24.60 18.8 12.5 53.0 34.0 7.5 9.00.500 12.70 13.5 27.80 22.3 16.0 53.0 34.0 7.5 9.00.625 15.88 17.0 30.95 26.5 20.0 54.5 35.5 9.0 10.50.750 19.05 20.0 34.15 29.5 23.0 54.5 35.5 9.0 10.50.875 22.23 23.0 37.30 33.0 27.0 54.5 35.5 9.0 10.51 .000 25.40 26.5 40.50 38.0 30.5 54.5 35.5 9.0 10.51 .125 28.58 29.5 47.65 41.5 34.5 72.0 45.0 10.5 12.01 .250 31.75 32.5 50.80 45.0 38.0 72.0 45.0 10.5 12.01 .375 34.93 36.5 54.00 48.0 41.0 72.0 45.0 10.5 12.01 .500 38.10 39.5 57.15 52.5 44.5 72.0 45.0 10.5 12.01 .625 41.28 42.5 60.35 57.0 48.5 72.0 45.0 10.5 12.01 .750 44.45 46.0 63.50 60.5 51.5 83.0 53.0 10.5 12.01 .875 47.63 49.0 66.70 64.0 55.0 83.0 53.0 10.5 12.02.000 50.80 52.0 69.85 66.0 58.0 84.5 54.5 12.0 13.52.125 53.98 55.5 73.05 71.0 61.5 84.5 54.5 12.0 13.52.250 57.15 58.5 76.20 76.5 65.0 84.5 54.5 12.0 13.52.375 60.33 61.5 79.40 78.5 68.5 84.5 54.5 12.0 13.52.500 63.50 65.0 82.55 82.0 72.0 84.5 54.5 12.0 13.52.625 66.68 68.0 92.10 84.0 75.0 86.0 65.0 14.5 16.02.750 69.85 71.0 95.25 89.0 79.0 86.0 65.0 14.5 16.02.875 73.03 74.5 98.45 92.5 82.0 89.0 68.0 14.5 16.03.000 76.20 77.5 101.60 95.5 85.5 89.0 68.0 14.5 16.03.125 79.38 80.5 111.15 101.5 91.0 99.0 76.0 18.5 20.03.250 82.55 84.0 114.30 99.0 76.0 18.5 20.03.375 85.73 87.0 117.50 99.0 76.0 18.5 20.03.500 88.90 90.5 120.65 111.5 100.0 99.0 76.0 18.5 20.03.625 92.08 93.5 123.85 103.0 79.0 18.5 20.03.750 95.25 96.5 127.00 118.0 108.0 103.0 79.0 18.5 20.03.875 98.43 100.0 130.20 106.0 82.0 18.5 20.04.000 101.60 103.0 133.35 125.0 116.0 106.0 82.0 18.5 20.0

MG9 . . . the alternativeBurgmann* Crane* Sealol* Dimensions Table

MG910/d1-G50 1A 43 CE long inch / mm1A 43 CE long mm

MG920/d1-G50 2 43 CE short inch / mm2 43 CE short mm

MG901/d1-G55 1 43 CU long inch (USA only)

MG921/d1-G55 2 43 CU short inch (USA only)21 43 CU short inch (USA only)

MG912/d1-G60 502 43 DIN mm521 43 DIN mm

2100-l1k 43 DIN mm

MG913/d1-G60 2100-l1N mm

* identical fitting dimensions

A

CB

AB

C

MG9

Dimensions in inches / mm Dimensions in inches

AB

CC

AA

A

A


Seal faces SeatsG4, G6 G9 G50 G60 G606

Q1 S Q1 S V Q1 BA Q1 U3


MG1

Single sealUnbalancedIndependentof direction of rotationElastomer bellowsMechanical seals of the MG series areamongst the most commonly used. Thebellows is not subjected to any torsionalstress and its ingenious design incorpo-rates several functions, as seal face carri-er, secondary sealing element and drivecollar. The seal face is driven through thespring and L-rings. There are no bondedjoints and all the face materials are inter-changeable without having to modify anydimensions. Highly recommended for du-ties with media containing solids eg. inwaste water and sewage applications.

MG1Item Part No. Description

DIN24250

1.1 472 Seal face1.2 481 Bellows1.3 484.2 "L-ring

(spring collar)1.4 484.1 "L-ring

(spring collar)1.5 477 Spring2 475 Seat3 412 O-ring or cup rubber

G4

Stationary seats

*) Unquoted dimensions as for G9

G6*EN 12756


d1* = 10 ... 100 mmp1* = 12 (16) bar m170 (230) PSI

vacuum up to 0.5 bar (up to 1 barwith seat locking)

t = 20 ... +120 (140) C4 F ... +250 (284) F

vg = 10 m/s m33 ft/s*) dependent on the medium, size and materials

MG12Dimensions, items and designations same as for MG1, but with an extendedbellows tail to achieve the fitting lengthI1K according to EN 12756 in combinati-on with seat G6 or G60. (d4 min acc. to EN12756 is exceeded).

Materials

Seal faces and seats(see table for combinations): Silicon carbide SiC (Q1) Carbon graphite, antimony-impregnated (A) Tungsten carbide (U3) Special cast chromium-molybdenum steel (S)

Aluminium oxide (V) Carbon graphite, resin-impregnated (B)

Bellows: FPM (V), EPDM (E), NBR (P),X4 (HNBR)Springs, L-rings: 1.4571 (G), Hastelloy C4 possible, please inquire.Designations ( ) according to EN 12756.

G606*EN 12756

G60*EN 12756

G50

h 8

+ 0,5

G9EN 12756


Dimensions in mm.Fitting length tolerances: d1 10 ... 12 mm 0.5; d1 14 ... 18 mm 1.0; d1 20 ... 26 mm 1.5; d1 = 28 ... 100 mm 2.0*) Minimum diameter of the mating collar

Dimensions adaptations for specific conditions, e.g. shaft in inches or special seat dimensions are available on request..

MG

1MG13Dimensions, items and designationssame as for MG 1, but with an extendedbellows tail to achieve the fitting lengthI1N according EN 12756 in combinationwith seat G6 or G60. (d4 min acc. to EN12756 is exceeded).

MG1S20Dimensions, items and designationssame as for MG 1, but with an extendedbellows tail to achieve the special fit-ting length I1S in combination with seatG50.

RMG12 (not illustrated)Identical to MG1, but with a special bel-lows surface on the shaft side. For use inhot-water pumps at up to 120 Cand 25 bar and/or 140 C/16 bar.Only in combination with seat G606. d1 = 12 ... 38 mm

MG1 multiple sealThe MG1 can also be used as a doubleseal in tandem or back-to-back arrange-ment. Installation proposals can be sup-plied on request.

d11012141516181920222425283032333538404243454850535558606568707580859095

100

d3f15.717.719.720.821.023.726.726.727.731.231.235.037.040.240.243.246.248.851.851.853.856.858.862.264.267.270.075.078.080.085.590.596.0

102.0107.0112.0

d6171921

2327

2931333437394242444951

54565962656770727781838895

100105110115

d7212325

2733

3537394043454848505658

616366707375788085909297

105110115120125

333333333333334444444444444444444

d1115.517.520.520.522.024.0

29.529.532.032.036.039.242.244.246.249.252.253.353.355.359.760.863.866.569.571.576.582.783.090.295.2

100.2105.2111.6114.5

d1219.221.624.624.628.030.0

35.035.038.038.042.045.048.050.052.055.058.062.062.064.068.469.372.375.478.480.485.491.592.099.0

104.0109.0114.0120.3123.3

d1411.013.517.017.017.020.020.021.523.026.526.529.532.532.536.536.539.542.546.046.046.049.052.055.558.561.561.568.071.071.077.584.087.093.596.5

103.0

d16f24.6027.8030.9530.9530.9534.1534.1535.7037.3040.5040.5047.6550.8050.8054.0054.0057.15

60.3563.5063.5063.5066.7069.8573.0576.2079.4079.4092.1095.2595.25

101.60114.30117.50123.85127.00133.35

dan22.525.028.528.528.532.037.037.037.042.542.549.049.053.553.557.059.062.065.565.568.070.574.078.581.085.588.593.596.599.5

107.0112.0120.0127.0132.0137.0

db*)20.522.526.526.526.529.033.033.033.038.038.044.044.046.046.050.053.055.058.058.060.063.065.070.072.075.079.084.088.090.095.0

100.0107.0114.0119.0124.0

182022222229333333383837374141445355535355586063656870778082879297

104109114

dm*) ds*)182022222226282828323237374141444749535355586063656870778082879297

104109114

dST24263030303338383844445050555559616467677074778183889196

100103110116124131136140

lm14.515.017.017.017.019.521.521.521.522.523.026.526.527.527.528.530.030.030.030.030.030.530.533.035.037.038.040.040.040.040.040.041.045.046.047.0

l1n25.925.928.428.428.430.030.030.030.032.532.535.035.035.035.035.036.036.036.036.036.036.038.036.536.541.541.541.541.248.748.748.046.051.051.051.0

l1Ki32.532.535.0

35.037.5

37.537.540.040.042.542.542.542.542.545.045.0

45.045.045.047.547.547.552.552.552.552.560.060.060.060.065.065.065.0

l1N404040

4045

4545505050505555555555

6060606070707070808080809090909090

l1Sl34.034.035.535.535.535.535.535.535.535.535.545.045.045.045.045.045.045.053.053.053.053.054.554.554.554.554.565.065.065.068.076.076.079.079.082.0

l2n33.433.433.433.433.437.537.537.537.542.542.542.542.547.547.547.546.046.051.051.051.051.050.559.059.059.059.069.068.768.768.778.076.076.076.076.0

l3252525252525252525252533333333333333414141414141414141494949525656595962

l5i1.51.51.5

1.52.0

2.02.02.02.02.02.02.02.02.02.02.0

2.02.02.02.52.52.52.52.52.52.52.52.53.03.03.03.03.0

l6444455555555556666666666677777777

l7i8.58.58.5

8.59.0

9.09.09.09.09.09.09.09.09.09.09.0

9.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.09.0

l8n17.517.517.5

17.519.5

19.519.519.519.519.519.519.519.519.522.022.0

22.022.022.023.023.023.023.023.023.026.026.026.026.226.226.225.225.2

l9g10.010.010.0

10.011.5

11.511.511.511.511.511.511.511.511.514.014.0

14.014.014.015.015.015.015.015.0

10969260 Burgmann Design Manual 155

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Transcript of 10969260 Burgmann Design Manual 155