The Graco 255518 Kit, Cmpl. Seal, L500CM is a genuine replacement seal kit designed for the overhaul and maintenance of L500CM 500cc Check-Mate® Carbon Steel MaxLife displacement pumps. This complete kit contains the essential sealing and wear components required to restore pump performance, reduce fluid leakage, and extend equipment service life.
Compatible Machines & Pumps
The Graco 255518 Complete Seal Kit is designed for equipment utilizing the following pump:
- L500CM – 500cc Check-Mate® Carbon Steel MaxLife Displacement Pump
- Check-Mate® supply systems equipped with an L500CM lower pump assembly
- Industrial extrusion and adhesive supply systems using an L500CM displacement pump
- Bulk fluid transfer systems configured with an L500CM pump lower
Product Features
| Part Number | 255518 |
| Product Type | Complete Seal Kit |
| Designed For | L500CM 500cc Check-Mate® Carbon Steel MaxLife Pump |
| Purpose | Seal replacement and fluid section rebuild |
| Application | Industrial pumping, transfer, extrusion, and supply systems |
| OEM | Genuine Graco Replacement Part |
What's Included in the Kit?
The kit contains a variety of replacement sealing and wear components used during a complete lower pump rebuild. Depending on the pump configuration, components may include:
- O-rings
- V-packings
- U-cup seals
- Packing glands
- Piston seals
- Valve seals
- Guide bearings
- Wipers and wear components
- Additional sealing hardware required for maintenance
Benefits of Replacing Worn Seals
- Helps prevent fluid leakage and pressure loss.
- Restores pump efficiency and consistent operation.
- Reduces unplanned downtime and maintenance costs.
- Extends the service life of the displacement pump.
- Maintains reliable performance in demanding industrial applications.
Compatible Check-Mate® Seal Kits Comparison
| Part Number | Compatible Pump | Pump Type |
| 255517 | L500CS | Carbon Steel Severe Duty |
| 255518 | L500CM | Carbon Steel MaxLife |
| 255519 | L500SS | Stainless Steel Severe Duty |
| 255520 | L500SM | Stainless Steel MaxLife |
Frequently Asked Questions
The Graco 255518 Kit, Cmpl. Seal, L500CM is used to rebuild and maintain the sealing system of L500CM displacement pumps, helping restore proper performance and prevent fluid leakage.
This seal kit is specifically designed for the L500CM 500cc Check-Mate® Carbon Steel MaxLife displacement pump.
Yes, the 255518 is a genuine OEM Graco seal kit manufactured for proper fit, performance, and reliability.
Replacing worn seals helps maintain pump pressure, reduces leakage, improves efficiency, and extends the operational life of the pump.
