Generic Buna-N O-Ring [3-7/8" ID] [1/8" CS] (O-281)

A Buna-N O-ring helps create a dependable seal at a compatible circular connection, and this generic version is sized with a 3-7/8 inch inside diameter and 1/8 inch cross-section using the O-281 reference. When an O-ring with these dimensions becomes worn, flattened, or cut, the assembly can lose the sealing support it should maintain.

The 1/8 inch cross-section gives this O-ring practical value because it provides a reliable mid-profile sealing section for many larger circular applications. 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 during service work where the original dimensions are known and the replacement needs to match both size and profile accurately. That keeps repairs more dependable and more precise.

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

• Buna-N O-ring with 3-7/8 inch ID and 1/8 inch cross-section
• Helps support dependable sealing in compatible applications
• Useful when exact dimensional replacement is needed
• Supports cleaner targeted maintenance and repair
• Improves fit accuracy and sealing confidence