Multi-purpose, copper based. For temperatures to 1800°F. (980°C). C5A is an all-purpose anti-seize lubricant that speeds assembly and disassembly of studs, bolts, flanges and fittings. It is recommended for most anti-seize applications. The exclusive C5A formula suspends microflake copper particles and premium flake graphite in a nonvolatile carrier. In effect, it copper plates 2 mating surfaces to prevent galling and seizing.