MIL-L-24131C(SH)
3.2.1 Isopropanol. The volatile diluent shall be isopropyl alcohol in conformance with the requirements of grades A or B of TT-I-735.
3.2.2 Binder and dispersant. The binder and the dispersant shall be nonionic organic materials which are not corrosive to metals. The binder and dispersant shall form a dry film which holds the graphite to the surface to which the lubricant is applied. The lubricant shall not form a hard unstirrable cake on settling in storage.
3.2.3 Graphite. Electric furnace graphite, 99 percent purity or higher, shall be used in the preparation of the lubricant.
3.2.4 Dried solids composition (washed solids). Dried solids from the lubricant shall contain 75 percent ± 5 percent graphite (see 4.4.3).
3.3 Physical and chemical requirements. Each batch of lubricant shall conform to the requirements specified in table I.
Table I - Physical and chemical requirements.
Total solids content; weight percent |
3.3 ± 0.5 |
Graphite content (percent of total solids) |
75 ± 5 |
Particle size, microns Maximum dimensions of 90 percent of the particles Maximum dimension of any particle |
4 10 |
Ash; weight percent, Maximum on total solids Fluorine, parts per million, (ppm) Maximum on total solids Chlorine, parts per million, Maximum on total solids Sulfur, parts per million Maximum on total solids Lead, parts per million Maximum on total solids |
0.75 20 200 200 150 |
3
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