Permatex . A highly refined blend of aluminum, copper, and graphite lubricants. Use during assembly to prevent galling, corrosion, and seizing, and to assure easier disassembly. Temperature range: -60 deg. F. to 1200 deg. F. Salt, corrosion, and moisture resistant; ideal for marine use. Non-aerosol version meets Mil Spec No. 907E. Suggested applications : For easy removal of spark plugs and cylinder head and exhaust head bolts. Lubricates sliding caliper disc brakes.