- Is a precision hydraulic sealing component designed to support primary O-rings, preventing them from extruding into clearance gaps under high-pressure cycling
| Type | Backup Ring |
| Style | Teflon Backup Ring |
| Material | Nylon |
| Color | Gray |
| Length | 0.050" (1.270 mm) |
| Width | 1.538" (39.065 mm) |
| Height | 1.538" (39.065 mm) |
