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8-445 FKM Back-up Ring


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  • Model: V890445
  • 0 in Stock

Contoured Back Up Ring

Contoured back-up rings are anti-extrusion devices, used in both static and dynamic sealing environments; they are also useful when mating part clearances are not tightly controlled. In either case they can extend the useful life of O-rings. Contoured back-up rings have a slightly concave face on one side, enabling uniform contact with the entire diameter of the O-rings they are used with. Sizes correspond with AS568 O-rings. Whenever possible, the use of two back-up rings is recommended, even in single-acting applications.

Stock Material: 90 durometer fluorcarbon - FKM

Temperature range: -15°F to +400°F


The O-ring Store is a distributor of O-rings, Seals, Seal Kits, Hydraulic Seals, and Pneumatic seals for many applications. We provide seal products to a variety of industries and customers such as: Automotive, Pool, Spa, Pump, Restaurant, Washer, Hydraulic, Coatings, construction equipment, material handling, industrial plant applications, farming, and logging equipment. We do not imply that these kits are original replacement parts.