OmniSeal Back-Up Rings Back-Up Rings These back-up rings are specially designed to work in high pressure, high temperature applications with the radial OmniSeals shown in this handbook. Conventional solid and split back-up rings, as well as custom designs, can also be supplied. Piston seal installation with dual back-up rings Rod seal installation with dual back-up rings Special Designs NOTE: Complete back-up ring gland dimensional data is available. Metallic anti-extrusion ring for inside face seal High modulus anti-extrusion/wear ring Other SGPPL high performance seal jacket materials and metallic spring energizers are available. For information regarding design requirements, specific seal designs, unique applications, additional data and specifications, contact Technical Support. Typical OmniSeal back-up ring installation Saint-Gobain Performance Plastics