D ring offer one more alternative seal solution to O ring for easy use in reciprocating dynamic or perhaps rotary applications. They offer exactly the same sealing characteristics just as one O ring and can be employed in both low and high pressure application across a diverse range of temperatures. Polyurethane D ring are a one piece, wrapping up solution which offers longer life and also reduced warranty expenses over traditional numerous component seals. A new D ring enhancements the performance of conventional face closure and O ring designs. They have exceptional wear extrusion and resistance in comparison to conventional methods.