Pipe union and seal

摘要: A pipe union and compound seal has a first member with central passageway, sealing surface flange shoulder. The fastening adapted to slide around the member. matching abut member's threads formed along inner of second passageway its outer receive engage threads. face opposing trough in for receiving retaining seal. is positioned embodiment spring U-shaped shell surrounding spring. open end disposed radially inward so that increased pressure within passageways increases engagement between union. In embodiment, metallic C-ring made relatively hard metal coating softer on surface. suitable applications involving extremely low or high temperature conditions.