Product Description
The 111790-001 is a complete hydraulic cylinder seal kit manufactured by Crown for WAVE electric work assist vehicles. This restoration kit contains NBR U-cup seals, PTFE back-up rings, and nylon wear rings—all the components needed to restore full hydraulic performance to lift truck cylinder assemblies. Designed for direct fitment on Crown WAVE pallet jack cylinders, this kit provides reliable sealing for demanding warehouse and dock operations. Ideal for operators experiencing hydraulic leakage, reduced lift speed, or erratic performance. All materials meet Crown specification standards for durability and safety.
Specifications
Material & Construction
| Primary Seal Material | NBR (Nitrile Butadiene Rubber), PTFE, nylon wear ring |
| Back-Up Ring Material | PTFE (Polytetrafluoroethylene) |
| Wear Ring Material | Nylon |
| Seal Hardness | 70-90 Shore A NBR; PTFE and nylon per Crown specification |
Part Numbers & Compatibility
| Manufacturer Part Number | 111790-001 |
| Compatibility | Crown WAVE electric lift truck hydraulic cylinders |
Frequently Asked Questions
Q: What is included in the CR 111790-001 seal kit?
A: The CR 111790-001 contains NBR U-cup seals, PTFE back-up rings, and a nylon wear ring. This kit restores complete hydraulic sealing for Crown WAVE (Work Assist Vehicle) lift truck cylinders.
Q: Which Crown models does the CR 111790-001 fit?
A: This kit is designed for Crown WAVE electric lift truck hydraulic cylinders. It provides direct fitment on Crown WAVE pallet jack cylinder assemblies. Verify your model designation before ordering.
Q: What are the seal material specifications?
A: The kit contains NBR (Nitrile Butadiene Rubber) primary seals at 70-90 Shore A hardness, PTFE (Polytetrafluoroethylene) back-up rings, and a nylon wear ring. All materials meet Crown OEM specifications for hydraulic cylinder sealing.
Q: What problems does this kit address?
A: Symptoms of seal failure include hydraulic fluid leakage from the cylinder, reduced or erratic lift performance, hissing sounds during operation, or low fluid levels requiring constant top-ups. This seal kit restores cylinder integrity.
Q: How long do these seals last?
A: Seal lifespan depends on operating hours, fluid condition, and maintenance practices. NBR and PTFE seals typically function 3-5 years under normal industrial use. High-temperature or contaminated hydraulic fluid shortens lifespan. Regular fluid analysis and filtration extend seal life.
Q: Is CR 111790-001 the original Crown part number?
A: Yes. CR 111790-001 is the direct OEM Crown part number for WAVE hydraulic cylinder seal kits. Use this exact SKU for fitment assurance.