

Converts compatible Graco Z-Pump systems to a sealed grease cup lubrication setup, improving sealing efficiency and reducing wear in high-duty pumping applications.
| Equipment Type | Compatibility Details |
|---|---|
| Z-Pump Size 120 | Direct OEM fit for Graco Z-Pump systems rated at size 120, ensuring proper grease cup conversion and sealing performance. |
| Older Z-Pump Models (No Grease Cup) | Designed specifically to upgrade legacy Z-Pumps that originally used wet cup configurations, replacing obsolete assemblies. |
| Z-Series Pump Assemblies | Compatible with select Graco Z-Series industrial pump configurations requiring grease cup conversion upgrades. |
The Graco 25U535 Kit, Conversion, Grease Cup, 120 is an OEM maintenance and upgrade solution designed to modernize lubrication systems in industrial-grade Z-Pump equipment. It replaces outdated wet cup configurations with a sealed grease cup system, improving lubrication consistency, reducing wear, and enhancing pump reliability in demanding environments.
This conversion kit is engineered by Graco to ensure precise compatibility, restoring optimal sealing performance and extending the operational lifespan of pump assemblies.
The 25U535 is a complete OEM conversion kit used to upgrade older Graco pump assemblies to a modern grease cup lubrication system. It replaces internal throat sealing components and obsolete wet cup designs with a fully integrated grease-lubricated sealing structure.
The kit typically includes precision-engineered components such as throat seals, O-rings, a throat cartridge, and a retainer assembly, all designed to maintain consistent lubrication pressure and minimize friction inside high-duty pumping systems.
This conversion kit is used to eliminate outdated lubrication designs and convert compatible pumps into a sealed grease cup system. The result is improved sealing efficiency, reduced maintenance intervals, and enhanced protection against internal wear in continuous-use applications.