MIL-PRF-23827C
TABLE I. Physical properties Continued.
Property
Requirement
Rust preventative properties, maximum
passing rate
2
Storage stability at 40° ±2°C , penetration (0.1 mm)
after:
unworked, minimum
200
worked (change from original), maximum
30
Water resistance, at 38° ±3°C,
percent lubricant washed out, maximum
20
Worked stability, penetration (0.1 mm)
270 375
1/
The grease shall show no green color in that portion contacting the copper strip.
2/
Average of four runs.
3.4 Workmanship. The grease, when examined visually, shall be a smooth homogenous
mixture, free of lumps and abrasive material. When worked with a spatula on a glass surface, the
grease shall exhibit uniformity and ability to spread with a straight edge to a smooth surface.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified
as follows:
a. Qualification inspection (see 4.3).
b. Conformance inspection (see 4.4).
4.2 Inspection conditions. Unless otherwise specified, all inspections shall be performed in
accordance with the conditions specified in tables I and II on unworked grease. The physical
requirements specified in table I apply to the average of determinations made on the sample.
4.3 Qualification inspection. Qualification inspection shall consist of all the requirements
and tests in table II.
4.3.1 Sampling. Qualification test samples shall consist of a minimum of 5 kilograms (kg) of
grease for which qualification is desired.
5
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