OEM specified. Permatex ultra silicones were developed to meet today's technology changes. Sensor-safe, low odor, noncorrosive. Outstanding oil resistance and joint movement tolerance. Eight times more flexible than cork/composite gaskets; three times more oil resistant than conventional silicones. Resists auto and shop fluids and vibration. Automobile suggested applications: Valve covers, oil pans, automatic transmission pans, intake manifold end seals, timing covers, water pumps and thermostat housings. Heavy duty suggested applications: Cover housing gasket, differential, assembly to rear axle housing, power dividers, axle shaft flanges.