Generic Buna-N Quad Ring [2-11/16" ID] [3/8" CS] (90-423-6138)

A Buna-N quad ring helps create a multi-lobed seal at a compatible circular connection, and this generic version is sized with a 2-11/16 inch inside diameter and 3/8 inch cross-section using the 90-423-6138 reference. When a sealing application is designed for a quad ring rather than a standard round O-ring, the correct profile helps preserve the intended sealing characteristics and contact behavior.

The quad-ring design gives this part practical value because its multi-lobed profile can differ from standard O-rings in how it seats and seals within the groove. A properly selected quad ring helps support cleaner fit and contributes to more dependable sealing performance where that profile is specified.

This type of part is especially useful during rebuild or maintenance work where the original seal design must be matched accurately and a standard O-ring is not the intended replacement. That keeps the repair more exact and more dependable.

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

• Buna-N quad ring with 2-11/16 inch ID and 3/8 inch cross-section
• Helps support dependable sealing in profile-specific applications
• Useful when a quad-ring replacement is required instead of a standard O-ring
• Supports cleaner targeted maintenance and repair
• Improves fit confidence and sealing reliability