The Graco 104129 Back-Up Ring is designed to reinforce O-ring seals in high-pressure pump and filter assemblies, preventing extrusion and ensuring long-lasting leak protection.
The Graco 104129 Back-Up Ring (also shown as Ring, Back-Up) is a support ring used with an O-ring in high-pressure Graco assemblies. Its job is to prevent O-ring extrusion, maintain seal geometry, and help reduce leaks under pressure cycling—extending service life of the seal group.
| Attribute | Detail |
|---|---|
| OEM Part Number | 104129 |
| Type | Back-Up Ring (support ring for O-ring in high-pressure assemblies) |
| Typical Use | Pump / manifold / filter sealing to help prevent O-ring extrusion and leakage |
| Where Used | Selected Graco industrial finishing & airless sprayer systems (verify by model parts list) |
Subscribe to our newsletter to get exclusive discounts and new theme launches right in your inbox.
You may unsubscribe at any moment. For that purpose, please find our contact info in the legal notice.
