This FDA-certified, 0.203-inch thick, white sanitary gasket has an inside diameter of 3.87 inches and an outside diameter of 4.68 inches. It has a Standard (Type 1) connection and is used with tri-clamp fittings. The working temperature is -80 Degrees F to 450 Degrees F. It has a tube hardness of 70A and is made of silicone and is chemical, high-temperature (400 Degrees F+), water, and weather-resistant.