6.406 x 7.031 x 0.062 55 Shore D Hytrel® U-Cup Back Up Ring Inch

These Hytrel® rings are supplied solid and are normally used to backup 8400 series U-Cups. They are highly extrusion resistant and are compatible with water and petroleum based fluids up to temperatures of 275° F. Unlike PTFE, they can be stretched over larger diameters and will quickly return to their original size. Temperature: -40° to 275°F