This FDA-certified, 0.203-inch thick, black tri-clamp sanitary gasket has an inside diameter of 2.875 inches and an outside diameter of 3.5 inches. It has a Standard (Type 1) connection and is used with tri-clamp fittings. The working temperature is -60 Degrees F to 300 Degrees F. It has a tube hardness of 70A and is made of EPDM and is chemical, water, weather, and steam-resistant.