The Homebrew Stuff Silicone Gasket for 1.5" Sanitary Tri Clamp Clover Sanitary hose connections just like the professional breweries use. 2" diameter disc on two fittings are clamped together with a high temp silicone gasket in between, providing a clean efficient connection for valves, hoses, etc. Made from high temp food grade silicone. Please check our other Homebrew Stuff listings for more accessory parts.