NPFC - MIL-L-45983
LUBRICANT, SOLID FILM: HEAT CURED (TEMPERATURE RANGE 125 DEG. TO 250 DEG. F (51.8 DEG. TO 121 DEG. C)) CORROSION INHIBITING
|Publication Date:||31 August 1976|
This specification covers one grade of solid film lubricant which provides both lubrication and corrosion protection when applied to phosphated ferrous metals and anodized aluminum alloys (see 6.1 and 6.4).
The solid film lubricant covered by this specification is intended for use in applications where a cure temperature above 250°F (121°C) may adversely affect the metallurgical or the corrosion... View More
The solid film lubricant covered by this specification is intended for use in applications where a cure temperature above 250°F (121°C) may adversely affect the metallurgical or the corrosion protective properties of the part to be coated with the lubricant. This lubricant is useful under the following conditions:
a. Where conventional lubricants are difficult to apply or retain.
b. Where dust or dirt contamination on lubricated surfaces is deleterious.
c. Where operating temperature may range from −90° to 250°F (68°C to 121°C).
d. In mechanisms operated at infrequent intervals.
e. In mechanisms which are lubricated for life.
f. Where long term corrosion protection is required.
g. Where a dull dark gray nonreflective surface is required.
h. Where a coating resistant to nearly every fluid, including diester lubricants, is required.
i. Where a sacrificial lubricant is necessary to carry extremely heavy loads developed in the initial start-up of heavily loaded mechanisms designed for fluid lubrication.
j. In operations consisting of reciprocating motion, loaded to 15 psi or less, where contamination with conventional fluid lubricants is probable.
k. It is generally suitable for sliding motion applications such as plain and spherical bearings, flap tracks, hinges, threads, and cam surfaces.
This lubricant should not be used under the following conditions:
a. On materials which will be adversely affected by the curing temperature.
b. In operations consisting of rotary motion above 100 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.
c. 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 0.0005 inches. Where maximum corrosion protection on steel is desired, the lubricant should be applied over phosphated steel to a thickness of 0.001 inches. This heavier coating can be expected to provide outdoor corrosion protection for approximately four years.View Less