Permatex Ultra Copper High-Temp RTV Silicone Gasket is designed for 4-cylinder, turbocharged, or high-performance engines, ing the most advanced high-temperature RTV silicone gasket available. This product is sensor safe, low odor, and noncorrosive, providing superior adhesion for a reliable seal. It is three times more oil resistant than conventional silicones and eight times more flexible than cut gaskets, ensuring durability under demanding conditions. The temperature range spans from -75°F to 700°F intermittent, making it resistant to automotive and shop fluids as well as vibration. I for use on exhaust manifolds and headers, valve covers, oil pans, timing covers, water pumps, and thermostat housings, this gasket sealant comes in a convenient 3 oz. tube. Model Number: 81878