04/19/23 1

Basic-PSA Mechanical Snubber Grease PSA-NRRG-2

Presented By:

Grant Nelson

VP of Sales & Service

Basic-PSA, Inc.

BASIC-PSA, INC.

WE SUPPORT THE WORLD

04/19/23 2

PSA-NRRG-2 Introduction

Through joint efforts with NYE Lubricants and JPL/NASA Laboratories working in conjunction with Basic-PSA, Inc., we are pleased to present PSA-NRRG-2 Mechanical Snubber Grease, the

replacement grease to NRRG-159.

Test results prove that PSA-NRRG-2 is a significantly superior grease for use in Basic-PSA

Mechanical Snubbers.

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Qualification / Radiation

The radiation qualification process was performed to meet the requirements of Basic-PSA, Inc's Mechanical Snubber Design Specification.

There was no significant change in percentage of weight loss in the radiated samples.

In addition,each radiated sample remained stable in an oxygen environment for 24 hours at 350° F with

no exothermic reaction.

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Absolute Viscosity, cP Data

16,500.00

17,500.00

18,500.00

19,500.00

20,500.00

21,500.00

22,500.00

23,500.00

24,500.00

Nominal 10.8 Mrad 28.6 Mrad 42.0 Mrad

NRRG-2 Sample 1 Sample 2 Sample 3

Grease Sample

cP

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Qualification / Evaporation

The evaporation qualification process exceeded the initial prior testing of NRRG-159 in time exposure

by approximately 2,200 hours.

The test results for evaporation rates exposed to 300°F in an open air environment were considerably improved as in comparison with the former NRRG-

159 data.

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NRRG-159 % WT LOSS at 300° F

0.00%

5.00%

10.00%

15.00%

20.00%

14 48 68 120 142 384 672 1080

HOURS EXPOSED

PE

RC

EN

TA

GE

OF

WT

LO

SS

% of WT LOSSLinear (% of WT LOSS)

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PSA-NRRG-2 % WT LOSS at 300° F

0.00%

5.00%

10.00%

15.00%

20.00%

240 600 787.5 936 1105 3336

HOURS EXPOSED

PE

RC

EN

TA

GE

OF

WT

LO

SS

% of WT LOSSLinear (% of WT LOSS)

BASIC-PSA, INC.

04/19/23 8

1,000,000

100,000

10,000

1,000

100

10

Temperature (  F)

TIME vs TEMPERATUREEVAPORATION RATENRRG-2 vs NRRG-159

Hours

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Summary

In summary, PSA-NRRG-2 is better than or equal to the former NRRG-159 Mechanical Snubber Grease and is the recommended replacement grease for use in Basic-PSA Mechanical Snubbers.

Through extensive testing, the PSA-NRRG-2 is a like for like replacement and is now available to all Basic-PSA Mechanical Snubber users.

In support of individual Preventative Maintenance Programs. Time vs. Temperature Grease curves are available upon request.