Product Description
GW 533 Complete Seal Kit for 1-5/8 inch ram, compatible with manual pallet jack hydraulic cylinders. Includes precision polyurethane, PTFE, and nitrile rubber seals, engineered to OEM standards for hydraulic pressure retention and leak prevention. Cross-references GP 533 and GP533 part numbers.
Specifications
Hydraulic/Pneumatic
| Wiper Seal Type | DH/DHS type, polyurethane material |
| Wear Ring Material | Phenolic fabric laminate |
Material & Construction
| Seal Material | Polyurethane (PU), Nitrile Rubber (NBR), Polytetrafluoroethylene (PTFE) |
| Guide Tape Construction | PTFE and phenolic fabric composite |
| Seal Hardness | Polyurethane elements: Shore A 90 ±5 |
| Piston Seal Hardness | NBR elements: Shore A 70 ±5 |
Part Numbers & Compatibility
| Manufacturer Part Number | GW 533 |
| OEM Part Number | GW 533 |
| Cross-Reference Part Numbers | GP 533, GP533 |
| Interchange Part Numbers | GW533, GP 533, GP533 |
Frequently Asked Questions
Q: Is GW 533 equivalent to GP 533 or GP533 seal kits?
A: Yes. GW 533 is a direct equivalent to GP 533 and GP533. All three part numbers are interchangeable and provide identical OEM-standard seal kits for 1-5/8 inch hydraulic ram cylinders. Verify your manual pallet jack model documentation to confirm the 1-5/8 inch bore size before ordering.
Q: What manual pallet jack models does the GW 533 seal kit fit?
A: GW 533 is engineered for manual pallet jacks with 1-5/8 inch hydraulic cylinders. Check your jack nameplate or cylinder bore diameter to confirm fitment. The kit includes polyurethane, PTFE, and nitrile rubber seals that conform to OEM specifications. If your cylinder bore is not 1-5/8 inches, do not use this kit.
Q: How do I install the GW 533 seal kit in my pallet jack?
A: First, depressurize the hydraulic system completely and drain the cylinder. Remove the old seal assembly from the 1-5/8 inch bore. Clean the bore surface with a lint-free cloth to remove debris. Install the new polyurethane and PTFE seals in the exact sequence provided (typically rod seal first, then piston seal). Apply a light coat of hydraulic oil to seals before installation to ease insertion. Reassemble the cylinder and refill with ISO VG 46 hydraulic fluid. Test pressure gradually to ensure no leaks.
Q: What symptoms indicate the GW 533 seals need replacement?
A: Watch for hydraulic fluid leaking from the cylinder rod end or external weeping around the bore. Listen for a hissing sound when raising or lowering the jack load, indicating internal seal failure. If the jack will not hold pressure or creeps down under load after pumping, the seals have likely failed. Check for visible oil residue on the cylinder body near seal areas. Any of these signs mean replacement is needed; do not continue operating the jack as loss of sealing can cause sudden load drop.
Q: What is the typical lifespan of GW 533 seals in service?
A: GW 533 seals typically last 3 to 5 years under normal manual pallet jack duty, assuming regular maintenance and clean hydraulic fluid. Lifespan depends on duty cycle frequency, ambient temperature, and fluid contamination. Change hydraulic fluid every 2 years to extend seal life. Store jacks in a dry area to prevent moisture contamination which degrades nitrile and polyurethane seals faster. Inspect seals annually for cracks or hardening.
