The solid film lubricants covered by this specification is military unique due to requirement that its performance should not be degraded as a result of exposure to the military unique fluids specified in table I. The lubricant is intended for use on aluminum, aluminum alloys, copper and copper alloys, steel, stainless steel, titanium, and chromium and nickel bearing surfaces. Solid film lubricants are often used on weapons, ground vehicles, and ground handling equipment. They are used for thin film lubricant for sliding motion application and under conditions where heavy-load capacity, solvent resistance, and long term corrosion protection are need. All end items should have the lubricant applied IAW the appendix of this document. It is useful under the following conditions:

a. Where conventional lubricants are difficult to apply or retain.

b. Where dust and dirt contamination on lubricated surfaces is deleterious.

c. Where temperatures may range from −67°C to +93°C (−88.6°F to 199.4°F).

d. In mechanisms operated at infrequent intervals.

e. In mechanisms that are lubricated for the life of the mechanism.

f. Where long-term corrosion protection is required.

g. Where a dull, dark gray or black non-reflective surface is required.

h. Where a sacrificial lubricant is necessary to carry extremely heavy loads developed in the initial start-up of heavily loaded mechanism designed for fluid lubrication. In operations consisting of reciprocating motion, loaded to 15 pounds per square inch (psi) (103 kilopascals (kPa)) or less, where contamination with conventional fluid lubricants are probable.

j. To touch up worn surfaces originally coated with lubricant conforming to MIL-PRF-46010.

k. For sliding motion applications such as plain and spherical bearings, flap tracks, hinges, threads, and cam surfaces.

The lubricants should not be used under the following conditions:

a. In operations consisting of rotary motion above 100 revolution per minute (rpm) under heavy loads where the possibility of conventional fluid lubricant contamination exists. The cured lubricant film is highly resistant to conventional fluid lubricants, but the high fluid pressures developed in heavily loaded sleeve type bearings drastically reduces the wear life provided by the solid film lubricant film.

b. On bearings containing rolling elements.

This lubricant can be expected to provide corrosion protection for five years in indoor storage and approximately two years protection in outdoor storage when the lubricant is applied over phosphated steel to a thickness of 0.013 mm. Where maximum corrosion protection of steel is desired, the lubricant should be applied over phosphated steel to a thickness of 0.025 mm. This heavier coating can be expected to provide outdoor corrosion protection for approximately four years.