Generic Buna-N O-Ring [4-3/8" ID] [1/8" CS] (90-423-5245)

A Buna-N O-ring helps create a seal at a compatible larger circular connection, and this generic version is sized with a 4-3/8 inch inside diameter and 1/8 inch cross-section using the 90-423-5245 reference. When a seal with these dimensions becomes brittle, cut, or compressed, 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 dependable mid-profile seal 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 repair work where the original larger-diameter seal dimensions are known and must be matched closely to restore fit. That keeps maintenance more precise 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 4-3/8 inch ID and 1/8 inch cross-section
• Helps support dependable sealing in larger compatible applications
• Useful when exact dimensional replacement is needed
• Supports cleaner targeted maintenance and repair
• Improves fit accuracy and sealing confidence