Bevel Seat Fittings provide a secure leak-tight connection. Designed to work with a metal-to-metal seat, Bevel seat unions are made up of hex union nut, a thread ferrule, a plain ferrule, a bevel seat gasket may be used for to create a secure vibration-resistant seal. Bevel seat ferrules are available in both 304/304L and 316/316L stainless steel. Hex nuts are available in only 304/304L stainless steel. Fittings are polished to a smooth finish on the interior that meets 3A and FDA requirements. Used in Pharmacy, Beer, Food, Petroleum, Dairy, Beverage, and Biotech industries.