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Profile STB10 is a pressure activated back-up ring which is designed to be used in conjunction with single acting / uni-directional piston seals which require protection from excessive clearance / extrusion gaps or applications working in high pressure and high temperature applications. It is normally used with small cross section seals and where radial gland space is limited.

The ring is normally supplied split to ease installation and to ensure the ring expands when subjected to system pressure, when this pressure is applied the clearance / extrusion gap is closed by the ring and the sealing element is prevented from flowing into the gap allowing longer trouble free service.

This part is available in many thermoplastic and thermoplastic elastomer materials to suit every application, talk to our technical team to discuss your requirements.