Generic Buna-N O-Ring [4-1/2" ID] [3/16" CS] (O-74)

A Buna-N O-ring helps create a seal at a compatible large circular sealing point, and this generic version is sized with a 4-1/2 inch inside diameter and 3/16 inch cross-section using the O-74 reference. When a heavier-profile O-ring becomes brittle, compressed, 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 larger sealing areas often require more material than thinner profiles can provide. A properly selected O-ring helps support cleaner fit and contributes to more dependable sealing performance where a thicker section is specified.

This type of part is especially useful during service work where a larger original seal must be matched closely to preserve the intended compression and groove fill. That helps keep maintenance more precise and more 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 4-1/2 inch ID and 3/16 inch cross-section
• Helps support dependable sealing where a thicker profile is required
• Useful when exact dimensional replacement matters
• Supports cleaner targeted maintenance and repair
• Improves fit accuracy and sealing confidence