465-8661: 420mm Outer Diameter Backup Ring

A Backup Ring, also known as an Anti-Extrusion Ring, is a device used in conjunction with sealing elements, such as O-rings, to prevent their extrusion under high pressure. They are typically placed in the gland between the seal and the clearance gaps, providing zero clearance and supporting the seal. Backup rings are not designed to have any sealing function on their own. They are typically made of plastic. Attributes: • Increases sealing reliability and improves resistance to extrusion • Manufactured to precise specifications and are built for durability and reliability Applications: A Backup Ring is designed to support the actual sealing elements to stop them from extruding under higher pressures.