Generic Buna-N O-Ring [5" ID] [3/16" CS] (O-278)

A Buna-N O-ring helps create a seal at a compatible large circular sealing point, and this generic version is sized with a 5 inch inside diameter and 3/16 inch cross-section using the O-278 reference. When a thicker-profile O-ring becomes brittle, worn, or flattened, 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 points often require more material than a thinner profile can provide. A properly selected O-ring helps support cleaner fit and contributes to more dependable sealing performance where a heavier section is part of the original design.

This type of part is especially useful when servicing larger housings, lids, or circular assemblies where exact profile matching matters to restoring reliable compression. That helps keep the repair accurate and dependable.

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

• Buna-N O-ring with 5 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 accuracy and sealing confidence