Hill | MK1 - MK2 Piston Seal Kit | Blue

MK1 - MK2 Piston Seal Kit | Hill – Essential maintenance seals for hand pump systems

The MK1 - MK2 Piston Seal Kit from Hill contains three replacement piston seals for Hill hand pumps. These seals maintain the airtight seal between piston and cylinder during high-pressure pumping up to 200-300 bar, preventing pressure loss when filling PCP airguns and HPA tanks.

Construction and materials

The seals are manufactured from wear-resistant material designed to withstand the extreme pressures generated during PCP cylinder and HPA tank filling. The blue seals resist degradation from friction, heat buildup, and insufficient lubrication during intensive pumping cycles. Each kit includes three complete seals for multiple maintenance intervals.

Application and use

This maintenance product serves PCP shooters and HPA users who regularly operate Hill hand pumps. Signs indicating seal replacement include resistance during upward pump strokes, handle dropping back, or pressure loss during pumping. The seals ensure efficient operation whether filling PCP airguns for precision shooting or HPA tanks for airsoft applications.

Integration and compatibility

These seals are specifically engineered for Hill MK1 and MK2 hand pump models. Installation requires basic tools and mechanical knowledge. The seals fit the exact tolerances of Hill pump cylinders, maintaining the critical seal integrity required for 200-300 bar operation.

Maintenance and lifecycle

Regular seal replacement extends pump lifespan and maintains pumping efficiency. Seal wear varies with usage intensity, lubrication practices, and operating conditions. The three-seal kit provides adequate inventory for scheduled maintenance or emergency repairs.