Gasket for extra high temperatures. Seals water pumps, motor housings, valve covers, etc. It seals water, oil and antifreeze. Replaces cork, felt, asbestos paper and rubber seals. Important - Not recommended for use on head gaskets or in places that are constantly immersed in gasoline. - Withstands high temperatures up to 343 C (with breaks). - Temperature range -73 C to 343 C