The Graco 255520 Kit, Cmpl. Seal, L500SM is a genuine replacement seal kit designed for servicing and rebuilding L500SM MaxLife Stainless Steel Check-Mate displacement pumps. This complete kit contains the essential sealing and wear components required to restore pump performance, reduce leakage, and extend equipment service life in demanding industrial fluid handling applications.
Compatible Machines
The Graco 255520 Complete Seal Kit is designed for use with the following pump assemblies and systems:
- Graco L500SM Check-Mate Lower
- 500 cc MaxLife Stainless Steel (L500SM) Displacement Pumps
- Graco supply systems equipped with an L500SM lower pump assembly
- Industrial pumping packages configured with L500SM Check-Mate lowers
- Adhesive, sealant, coating, and fluid transfer systems utilizing L500SM pumps
Kit Features
| Part Number | 255520 |
| Product Type | Complete Seal Kit |
| Compatible Pump | L500SM MaxLife Stainless Steel Check-Mate Pump |
| Application | Pump maintenance, seal replacement, and performance restoration |
| Manufacturer | Graco |
What's Included in the Kit?
The Graco 255520 kit contains multiple sealing and wear components commonly replaced during pump maintenance procedures. Depending on the pump configuration, components may include:
- O-rings
- V-packings
- U-cup seals
- Piston seals
- Valve seals
- Acetal sealing components
- Packing glands
- Piston guide bearings
- Wet-cup cover seals and wipers
- Spacers and related sealing hardware
Applications
The Graco 255520 Complete Seal Kit is commonly used when rebuilding or maintaining pumps that handle demanding industrial materials. Proper seal replacement helps maintain pressure, improve pumping efficiency, and minimize downtime.
- Industrial adhesives
- Sealants
- Protective coatings
- High-viscosity fluids
- Mastics and specialty compounds
- General fluid transfer operations
Benefits of Replacing Worn Seals
- Helps prevent fluid leakage
- Restores pump efficiency and pressure performance
- Reduces unexpected maintenance issues
- Extends displacement pump service life
- Supports reliable operation in demanding production environments
Frequently Asked Questions
The Graco 255520 Complete Seal Kit is used to rebuild and maintain L500SM displacement pumps by replacing worn seals and related wear components.
This kit is specifically designed for the L500SM MaxLife Stainless Steel Check-Mate displacement pump and systems utilizing this lower pump assembly.
Yes. The kit is designed as a complete seal replacement package and includes the primary sealing and wear components commonly required during pump overhaul procedures.
Regular seal replacement helps prevent leakage, maintain pumping performance, reduce downtime, and extend the operational life of the displacement pump.
