Generic Buna-N O-Ring [8-1/2" ID] [3/16" CS] (90-423-5371)

A Buna-N O-ring helps create a seal at a compatible large circular connection, and this generic version is sized with an 8-1/2 inch inside diameter and 3/16 inch cross-section using the 90-423-5371 reference. When a heavier-profile large-diameter O-ring becomes compressed, worn, or cut, the assembly can lose the sealing support it should maintain.

The 3/16 inch cross-section gives this O-ring practical value because broader sealing surfaces often require more material than a lighter profile can provide. A properly selected O-ring helps support cleaner groove fill and contributes to more dependable sealing performance where a thicker section is required.

This type of part is especially useful when restoring a larger original seal that depends on a substantial profile for correct compression. That keeps service more accurate and more dependable.

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

• Buna-N O-ring with 8-1/2 inch ID and 3/16 inch cross-section
• Helps support dependable sealing where a thicker profile is required
• Useful when exact O-ring profile matching matters
• Supports cleaner targeted maintenance and repair
• Improves fit confidence and sealing reliability