Excel is a copper rich formula that provides superior lubrication and protection under the most adverse and corrosive condition. Assures accurate torquing and easier assembly and disassembly of parts. Superior formulation is not affected by acids, solvents, oils, alkalies, gasoline, salt water, and other chemicals. Maintains a higher degree of electrical conductivity. For use on plastics, fiberglass and all metals (including all alloys of steel, aluminum, brass, and copper). Packaged with a bilingual label (English/ French.