Generic Buna-N O-Ring [4-1/2" ID] [1/8"CrossSection (O-400)

A Buna-N O-ring helps create a seal at a compatible larger circular connection, and this generic version is sized with a 4-1/2 inch inside diameter and 1/8 inch cross-section using the O-400 reference. When an O-ring with this size and profile becomes damaged or flattened, the connection can lose the sealing support it should maintain.

The 1/8 inch cross-section gives this O-ring practical value because it provides a fuller sealing profile than a thin section while still fitting many standard larger grooves. A properly selected O-ring helps support cleaner compression and contributes to more dependable sealing performance in the intended application.

This type of part is especially useful during maintenance where both larger diameter and mid-profile cross-section must be matched closely to restore proper fit. That keeps repairs accurate and more dependable.

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

• Buna-N O-ring with 4-1/2 inch ID and 1/8 inch cross-section
• Helps support dependable sealing in larger compatible applications
• Useful when exact O-ring profile matching matters
• Supports cleaner targeted maintenance and repair
• Improves fit confidence and sealing reliability