MIL-PRF-81322G
4.5.2 Storage stability. The storage stability shall be in accordance with FED-STD-791,
Method 3467, and the following:
Temperature of 38 ± 3 °C (100 ± 5 °F) to be maintained for 6 months. After determination
of unworked penetration, the unworked penetration sample shall be stored at 38 ± 3 °C
(100 ± 5 °F) for an additional 6 months. The sample shall be covered in such fashion to
provide an air space above the grease and to prevent the surface of the grease from being
disturbed. The sample shall then be examined for presence of crystalline material.
4.5.3 Compatibility. Fill standard grease cups with equal volumes of the grease being tested
and previously qualified greases. The cup shall be filled by alternately adding 60 grams of each
of the two greases being tested, until the cup is full (approximately 454 grams). Mix the two
greases by working the sample for 60 double strokes in accordance with the worked penetration
procedure of ASTM-D217 and then let the mixture stand undisturbed for seven days at 18.0 to
29.5 °C (65 to 85 °F) and 50 ± 10 percent relative humidity. Examine the worked penetration
and then the worked stability in accordance with table II, using the same sample of grease
mixture for both tests. Small amounts of fresh grease may be added to the worker cup just prior
to the worked stability test, as needed to maintain a full cup for testing.
4.5.4 Odor. The odor of the grease shall be observed immediately upon opening the test
container for conformance to table I.
4.5.5 Toxicity. To determine conformance to 3.6, the grease shall be evaluated via a Health
Hazard Risk Assessment (HHRA) which will be performed by the Navy Environmental Health
Center (NEHC) (see 6.2 and 6.9).
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified
in the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-
house contractor personnel, these personnel need to contact the responsible packaging activity to
ascertain packaging requirements. Packaging requirements are maintained by the Inventory
Control Point's packaging activity within the Military Service or Defense Agency, or within the
military service's system commands. Packaging data retrieval is available from the managing
Military Department's or Defense Agency's automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature which may be helpful,
but is not mandatory.)
6.1 Intended use. The grease covered by this specification is military unique because it is
intended to lubricate military aircraft equipment subject to extreme marine conditions and
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