Permatex Sensor-Safe High-Temp RTV Silicone Gasket Maker is formulated for oxygen sensor equipped engines and withstands an intermittant temperature range of -65 degrees F to 650 degrees F. This first generation, 1970-1980, gasker maker is resistant to automotive and shop fluids. These gaskets offer significant performance advantages which include outstanding oil resistance, excellent torque retention and hi-temp, sensor-safe properties. Suggested applications include valve covers, oil pans, timing covers, water pumps, thermostat housings, and transmission pans.