Generic Square Ring [4-3/4" ID] [5-1/16" OD] (O-266)

A square ring helps create a seal at a compatible circular connection where a square-profile seal is specified, and this generic version is sized with a 4-3/4 inch inside diameter and 5-1/16 inch outside diameter using the O-266 reference. When a square-profile seal becomes brittle, flattened, or worn, the assembly can lose the sealing support it should maintain.

The square-ring construction gives this part practical value because some groove designs are intended for flat-sided sealing geometry rather than a standard round O-ring. A properly selected square ring helps support cleaner seating and contributes to more dependable sealing performance where that profile is required.

This type of part is especially useful during maintenance where exact seal shape and size must be matched to restore reliable service. That helps keep repairs more accurate and more dependable.

Installed in the proper application, this square ring helps support dependable sealing and contributes to cleaner overall system integrity.

• Square ring with 4-3/4 inch ID and 5-1/16 inch OD
• Helps support dependable sealing in square-profile applications
• Useful when exact profile and sizing matter
• Supports cleaner targeted maintenance and repair
• Improves fit confidence and sealing reliability