Generic Buna-N O-Ring [5/16" ID] [1/8" CS] (90-423-5203)

A Buna-N O-ring helps create a dependable seal at a compatible compact circular connection, and this generic version is sized with a 5/16 inch inside diameter and 1/8 inch cross-section using the 90-423-5203 reference. When a small O-ring with a fuller profile becomes brittle, cut, or worn, the connection can lose the sealing support it should maintain.

The 1/8 inch cross-section gives this O-ring practical value because some compact applications still require a more substantial sealing profile than a thinner section can provide. A properly selected O-ring helps support cleaner compression and contributes to more dependable sealing performance in the intended groove.

This type of part is especially useful when the original design calls for a small inside diameter with a heavier cross-section that should be matched closely during repair. That makes it practical for accurate service work.

Installed in the proper application, this O-ring helps support dependable sealing and contributes to cleaner overall component integrity.

• Buna-N O-ring with 5/16 inch ID and 1/8 inch cross-section
• Helps support dependable sealing in compact heavier-profile applications
• Useful when exact profile matching matters
• Supports cleaner targeted maintenance and repair
• Improves fit accuracy and sealing confidence