This thread compound is particularly suitable for use on aircraft engine spark plugs and threaded fasteners and fittings at temperatures below 800°F. This compound contains molybdenum disulfide which at higher temperature conditions (1000°F and above) may induce hot corrosion of fastener or contiguous materials. Accordingly, its use at higher temperatures shall be avoided. MIL-T-5544 thread compound should be used in lieu of products directed by this specification in these high temperature applications for Air Force use. It should not be used in lieu of sealing compound, pipe joint and thread, lead free, general purpose conforming to TT-S-1732.