C K Fast Gasket Red may be used to make any size or shape gasket to replace a wide range of cork, paper, asbestos, felt and metal gaskets. 100% silicone. Use on oil pans, oil pumps, water pumps, thermostat housings, timing case covers, valve covers, push rod covers, transmission pans, and cam shaft rear covers, and the real seal of the differential. Oxygen sensor safe, and of low volatility. Temperature range up to 550°F.