The Graco 255507 Kit, Complete Seal, L100CS is a genuine replacement seal kit designed to restore the performance of Graco L100CS Severe Duty displacement pumps. This comprehensive kit contains the essential sealing components required during routine maintenance and pump rebuilds, helping reduce leakage, maintain pressure, and extend equipment service life.
Compatible Machines & Pump Assemblies
This seal kit is designed for equipment and systems that utilize the L100CS Check-Mate® 100cc Carbon Steel Severe Duty Lower Pump.
- Graco Check-Mate® systems equipped with an L100CS 100cc Carbon Steel lower pump
- Graco adhesive supply systems using the L100CS displacement pump
- Graco sealant pumping systems utilizing the L100CS lower pump assembly
- Graco extrusion systems fitted with the L100CS Severe Duty pump
- Graco fluid transfer systems using the L100CS displacement pump
- Industrial lubrication systems configured with the L100CS pump lower
- Custom Graco pumping packages built around the L100CS Check-Mate® pump platform
Kit Features
| Part Number | 255507 |
| Product Name | Complete Seal Kit, L100CS |
| Pump Compatibility | L100CS Check-Mate® 100cc Carbon Steel Severe Duty Lower Pump |
| Application | Pump maintenance, rebuilding, and seal replacement |
| OEM Manufacturer | Graco |
What's Included in the Kit?
The Graco 255507 Kit, Complete Seal, L100CS includes a complete set of replacement sealing and packing components commonly required during a lower pump overhaul.
- O-rings
- PTFE O-rings
- V-packings
- PTFE V-packings
- Male and female packing glands
- UHMWPE packing components
- Foot valve sealing components
- Piston guide bearing
- Piston seals
- Valve seals
- Additional sealing components required for complete pump service
Benefits of Replacing Worn Seals
- Helps maintain consistent fluid pressure and flow performance
- Reduces leakage and material loss
- Extends the service life of the displacement pump
- Supports reliable operation in demanding industrial environments
- Minimizes downtime caused by worn packing and seal components
Related L100CS Service Kits
| Part Number | Description |
| 255507 | Complete Seal Kit |
| 255523 | Throat Seal Kit |
| 255539 | Intake Kit |
| 255533 | Piston Seal Kit |
| 255557 | Intake Valve Seal Metal & Soft Kit |
| 255592 | Cylinder Kit (L100CS/L100CM) |
Frequently Asked Questions
The kit is used to rebuild and maintain L100CS Severe Duty displacement pumps by replacing worn sealing and packing components that can affect pump performance.
This kit is designed specifically for the L100CS Check-Mate® 100cc Carbon Steel Severe Duty lower pump and systems that use this pump assembly.
Yes. The kit contains multiple sealing components, including piston and valve sealing parts required during a complete lower pump service.
Regular seal replacement helps prevent leaks, maintain operating pressure, improve reliability, and extend the overall life of the pump.
