Generic Square Buna-N O-Ring [5-1/8" ID] [3/16" CS] (90-423-6100)

A square-profile Buna-N O-ring helps create a seal at a compatible circular connection where the original design uses a non-round profile, and this generic version is sized with a 5-1/8 inch inside diameter and 3/16 inch cross-section using the 90-423-6100 reference. When a square-profile seal becomes worn or compressed, the assembly can lose the sealing support it should maintain.

The square-profile construction gives this part practical value because some grooves are designed for flat-sided seals rather than standard round O-rings. A properly selected replacement helps support cleaner seating and contributes to more dependable sealing performance where that profile is specified.

This type of part is especially useful during maintenance where both seal shape and dimensions must be matched accurately to restore dependable operation. That keeps repairs more precise and more dependable.

Installed in the proper application, this square-profile seal helps support dependable sealing and contributes to cleaner overall assembly integrity.

• Square-profile Buna-N seal with 5-1/8 inch ID and 3/16 inch cross-section
• Helps support dependable sealing in profile-specific applications
• Useful when exact seal shape and sizing matter
• Supports cleaner targeted maintenance and repair
• Improves fit confidence and sealing reliability