Product Description
GW 5111 Seal Kit for manual pallet jack hydraulic units—OEM-quality replacement for 1-5/8 inch bore lift rams. Includes NBR U-cup, O-ring, backup ring, and bushing. Cross-references with GP 5111. Compatible with industry-standard manual pallet jacks.
Specifications
Hydraulic
| Seal Material | High-durability NBR (nitrile rubber) with thermoplastic backup |
| Maximum Working Pressure | Rated for hydraulic jacks up to 3000 PSI |
| Cup Seal Facing Orientation | Wide seal face installed toward pressure side |
Material
| Seal Hardness | NBR seals with 70 Shore A nominal hardness |
| Backup Ring Specification | Thermoplastic backup ring per ISO 3601-1 |
Part Numbers
| OEM Part Number | GW 5111 |
| Manufacturer Part Number | GW 5111 |
| Cross-Reference Part Numbers | Equivalent to GP 5111, GP5111 |
| Vendor Part Number | GW 5111 |
Frequently Asked Questions
Q: Is GW 5111 equivalent to GP 5111?
A: Yes. GW 5111 is a direct OEM-quality replacement for GP 5111 and GP5111 seal kits. Both are designed for 1-5/8 inch bore lift rams in manual pallet jacks. Always verify your jack model before installing to confirm bore diameter matches.
Q: What components are included in the GW 5111 seal kit?
A: GW 5111 contains four critical sealing elements: NBR U-cup seal (primary hydraulic seal), O-ring (secondary seal), thermoplastic backup ring (pressure support), and bushing (friction reduction). All components are OEM-specification and work as a matched set for 1-5/8 inch bore rams.
Q: What pressure rating does GW 5111 support?
A: GW 5111 is rated for hydraulic systems up to 3000 PSI, which covers standard manual pallet jack lift systems. Do not exceed 3000 PSI or seal material degradation and leakage will occur.
Q: How do I know if my pallet jack needs a GW 5111 seal replacement?
A: Watch for these symptoms: slow or incomplete lift, hydraulic fluid pooling under the jack, or hissing sounds during pump operation. If your jack bore is 1-5/8 inch and shows any of these signs, inspect the lift ram seals. A cloudy or damaged U-cup visible in the bore indicates seal failure and the need for replacement.
Q: Can I install GW 5111 without professional service?
A: Installation requires lifting the jack completely, draining hydraulic oil, removing the lift ram, and carefully extracting worn seals without damaging the bore. The bore surface must be clean and undamaged. If you lack hydraulic service experience, have a technician perform this work—improper installation causes leaks and equipment damage.
