![Generic Buna-N O-Ring [7-1/4″ ID] [3/16″, CS] (90-423-5366)](https://www.poolsprings.com/wp-content/uploads/2026/09/generic-buna-n-o-ring-7-1-4-id-3-16-cs-90-423-5366.webp)
Description
A Buna-N O-ring helps create a seal at a compatible large circular connection, and this generic version is sized with a 7-1/4 inch inside diameter and 3/16 inch cross-section using the 90-423-5366 reference. When a heavier-profile O-ring becomes flattened, brittle, or damaged, the assembly can lose the sealing support it should maintain under normal service conditions.
The 3/16 inch cross-section gives this O-ring practical value because larger sealing points often need more material than a lighter profile can provide. A properly selected O-ring helps support cleaner groove fill and contributes to more dependable sealing performance where a substantial profile is required.
This type of part is especially useful when replacing an original large-diameter seal that depends on a thicker section for proper groove compression. 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 assembly performance.
- Buna-N O-ring with 7-1/4 inch ID and 3/16 inch cross-section
- Helps support dependable sealing where a thicker profile is required
- Useful when exact profile matching matters
- Supports cleaner targeted maintenance and repair
- Improves fit confidence and sealing reliability
