Restores hydraulic sealing inside Graco piston pump assemblies by replacing worn U-cup seals, helping maintain pressure stability and prevent fluid leakage during operation.
| Equipment Category | Compatible Graco Models | Application Notes |
|---|---|---|
| Airless Paint Sprayers | Ultra 395, Ultra 495, Ultra 595 | Used in piston pump sealing systems requiring U-cup sealing elements |
| Contractor-Grade Sprayers | Graco Mark V, Mark X, Mark HD series | Compatibility depends on hydraulic pump revision and seal configuration |
| High-Output Hydraulic Systems | Graco GH 230, GH 300, GH 833 (select models) | Supports U-cup sealing in high-pressure pump assemblies |
The Graco 262561 Kit, U-Cup Repair 5 is a maintenance repair kit designed to restore the sealing performance of U-cup components inside Graco hydraulic piston pump assemblies. U-cups play a critical role in maintaining pressure integrity by preventing fluid bypass and ensuring smooth piston movement during high-pressure spraying.
When U-cup seals wear or deform, the pump may lose pressure consistency, develop leakage, or produce uneven spray output. This kit provides replacement sealing components engineered to restore original hydraulic efficiency in Graco airless spray systems.
