Copper Grade Anti-Seize a combination of copper (10%) flake, graphite and other extreme pressure additives. Copper Grade Anti-Seize is copper in color and is not recommended for applications where copper is prohibited. Like Silver Grade, Copper Anti-Seize protects metal parts against rust, corrosion, galling and seizure at temperatures up to 1800° F. It is electrically conductive and does not compromise the integrity of soft metals.