MIL-PRF-81329D
3.3.6 Storage stability. The lubricant shall show no evidence of gelling and shall conform to
the film adhesion requirements of 3.3.3 after 12 months (see 4.5.7).
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified
as follows:
a. First article inspection (see 4.3).
b. Conformance inspection (see 4.4).
4.2 Inspection conditions. Unless otherwise specified, all inspections shall be performed at a
temperature of 25 ± 3 °C.
4.3 First article inspection. First article inspection shall consist of the tests listed in table I.
TABLE I. Inspections.
TEST
PARAGRAPH
FIRST
CONFORMANCE
ARTICLE
Film appearance
4.5.2
X
X
Film thickness
4.5.3
X
X
Film adhesion
4.5.4
X
X
Thermal stability
4.5.5
X
--
Endurance life
4.5.6
X
X
Storage stability
4.5.7
X
--
4.3.1 First article samples. The first article samples shall consist of three liters selected at
random from the first lot of lubricant processed under a contract or order.
4.4. Conformance inspection. The conformance inspection shall consist of testing the
samples of 4.4.1 in accordance with table I.
4.4.1 Conformance samples. The conformance samples shall consist of one can of lubricant
taken at random from each lot of packaged lubricant, or; if obtained from a bulk tank, in
accordance with ASTM-D4057 or ASTM-D4177. The lot shall be unacceptable if the samples
fail to comply with any of the tests specified in table I.
4.5 Tests.
4.5.1 Preparation of test panels. Samples of the lubricant in sprayable form shall be used to
prepare bonded film lubricant specimens on test panels in accordance with the following
application procedure for the film appearance, film thickness, and film adhesion tests:
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