Overview
The Parker PK4002AN01 is a genuine piston seal kit designed for Parker 2A and 2AN series hydraulic cylinders with a 4-inch bore diameter. Manufactured with Buna-N (Nitrile) elastomer, this Class 1 seal kit delivers proven sealing performance in high-pressure fluid power systems. The kit is supplied new in box and ready for immediate installation in maintenance and repair applications.
Key Features
- Genuine Parker Cylinder Division component for proven compatibility
- Buna-N (Nitrile) material construction suitable for mineral oil and water-based hydraulic fluids
- Class 1 seal rating for standard pressure-range applications
- 4-inch bore diameter design for 2A and 2AN series cylinders
- Supplied new in original packaging
- Drop-in replacement for worn or failed seals
Technical Specifications
| Part Number | PK4002AN01 |
| Bore Diameter | 4 inches |
| Seal Material | Buna-N (Nitrile) |
| Seal Class | Class 1 |
| Series | 2A, 2AN |
| Kit Type | Piston Seal Kit |
| Condition | New in Box |
| Manufacturer | Parker Hannifin – Cylinder Division |
Typical Applications
- Hydraulic cylinder seal replacement and maintenance
- Industrial machinery and equipment repair
- Agricultural and construction equipment hydraulics
- Manufacturing systems requiring reliable fluid containment
- Mobile and stationary hydraulic power applications
Compatibility & Replacements
Compatible With
- Parker 2A series hydraulic cylinders
- Parker 2AN series hydraulic cylinders
- 4-inch bore Parker cylinder designs
- Mineral oil hydraulic fluids
- Water-based hydraulic fluids
Replaces / Drop-In Replacement For
- Original equipment Parker piston seal assemblies for 4″ bores
- Worn or degraded seals in Parker 2A/2AN cylinders
- Verify exact compatibility with your specific cylinder configuration before ordering
Works With
- Parker cylinder repair and maintenance programs
- Standard hydraulic assembly tools and gland wrenches
- Parker authorized service centers and distributor networks



