Overview
The Parker RK2AHL0255 is a genuine rod seal kit designed for 2-1/2″ (63.50 mm) piston rod diameter hydraulic cylinders. This kit includes rod seals measuring 63.50 mm (2.50 in) in diameter and is compatible with a range of Parker models including A, 2A, H, 2H, VH, L, 2L, and 3L, ensuring seamless integration into your existing equipment. The kit maintains system integrity by creating a reliable seal against hydraulic pressure and external contaminants, extending cylinder service life.
Key Features
- Viton Material: The seals are crafted to meet high temperatures, offering reliable protection and durability
- Standardized Sizing: Fits 2-1/2″ rod diameter cylinders across multiple Parker series
- Multi-Series Compatibility: Acceptable for Parker Hannifin Cylinders A, 2A, H, VH, L 2L & 3L Cylinders
- Complete Kit: Contains all rod seal components needed for cylinder restoration
- New Condition: Ships new in box, ready for immediate installation
Technical Specifications
- Rod Diameter: 2-1/2″ (63.50 mm)
- Seal Material: Viton (FKM)
- Operating Temperature Range: -10°F to +160°F
- Fluid Media: Petroleum based hydraulic oils
- Pressure Rating: Up to 3000 psi (standard Parker cylinder rating)
- Kit Type: Rod seal kit (RK designation)
- Manufacturer: Parker Hannifin Corporation
Typical Applications
The Parker RK2AHL0255 is used in:
- Hydraulic tie-rod and welded cylinders with 2-1/2″ rod diameter
- Production line machinery requiring precise linear motion
- Mobile and industrial equipment hydraulic systems
- Preventive maintenance and cylinder rebuild programs
- Systems operating in moderate-to-high temperature environments
Compatibility & Replacements
Compatible With
- Parker Series 2A Cylinders
- Parker Series 2H Cylinders
- Parker Series 3L Cylinders
- Parker Series VH Cylinders
- Parker Series A, H, L Cylinders (2-1/2″ rod)
- Standard NFPA industrial interchange cylinders with 2-1/2″ rod
Replaces / Drop-In Replacement For
The RK2AHL0255 is the OEM seal kit specification for Parker 2-1/2″ rod cylinder kits. Verify your cylinder’s rod diameter and series against Parker’s published compatibility charts before ordering.
Works With
- Petroleum-based ISO hydraulic fluids
- Industrial hydraulic systems rated 3000 psi
- Parker cylinder glands (rod gland assembly RG2AHL0255 sold separately)
- Standard tie-rod and bolted cylinder designs



