Generic Buna-N O-Ring [7-1/2" ID] [1/4" CS] (O-449)

A Buna-N O-ring helps create a seal at a compatible large circular connection, and this generic version is sized with a 7-1/2 inch inside diameter and 1/4 inch cross-section using the O-449 reference. When a large heavy-profile O-ring becomes worn, flattened, or damaged, the assembly can lose the sealing support it should maintain across the full circumference.

The 1/4 inch cross-section gives this O-ring practical value because larger sealing surfaces often require more material than a light or medium profile can provide. A properly selected O-ring helps support cleaner groove fill and contributes to more dependable sealing performance in broad circular applications.

This type of part is especially useful during service work where a large original seal must be matched closely in both diameter and profile to restore reliable fit. That keeps maintenance more accurate and more dependable.

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

• Buna-N O-ring with 7-1/2 inch ID and 1/4 inch cross-section
• Helps support dependable sealing in large compatible applications
• Useful when a heavier seal profile is required
• Supports cleaner targeted maintenance and repair
• Improves fit confidence and sealing reliability