This FDA-certified, 0.203-inch thick, white sanitary gasket has an inside diameter of 2.375 inches and an outside diameter of three inches. It has a Standard (Type 1) connection and is used with tri-clamp fittings. The working temperature is -100 Degrees F to 500 Degrees F. It is made of PTFE and is chemical, high-temperature (400 Degrees F+), water, weather, oil, and steam-resistant.