Product Description
CR 111790-009 hydraulic seal kit for Crown electric lift trucks. Direct replacement for OEM 111790-009, engineered to restore cylinder hydraulic sealing performance. Includes NBR and PTFE seals, back-up rings, and wear ring. Compatible with a range of Crown lift truck hydraulic cylinders; interchangeable with 111790-9 and CRN-111790-9.
Specifications
Hydraulic
| Seal Material Composition | Nitrile (NBR) and PTFE (polytetrafluoroethylene) |
| Maximum Working Pressure | Rated for hydraulic cylinder pressures to 3000 PSI |
Material & Construction
| Wear Ring Material | Reinforced nylon/polymer |
| U-Seal Material | Nitrile (NBR) or fluorocarbon, depending on cylinder specification |
Part Numbers
| OEM Part Number | CR 111790-009 |
| Manufacturer Part Number | 111790-009 |
| Alternate Search Part Numbers | CR111790-009, 111790-9, CRN-111790-9 |
| Cross-Reference Part Numbers | Equivalent to 111790-9, CRN-111790-9; no supersedes or replaced part numbers identified |
Frequently Asked Questions
Q: What does the CR 111790-009 seal kit contain?
A: The CR 111790-009 hydraulic seal kit includes NBR and PTFE seals, back-up rings, and a wear ring. This kit restores complete hydraulic sealing performance for Crown lift truck hydraulic cylinders.
Q: Which Crown lift truck models is this seal kit compatible with?
A: The CR 111790-009 fits a range of Crown lift truck hydraulic cylinder assemblies. It is interchangeable with 111790-9 and CRN-111790-9. Verify your equipment model and cylinder specifications for confirmation.
Q: What are the cross-reference part numbers?
A: CR 111790-009 is equivalent to 111790-9 and CRN-111790-9. All three part numbers reference the same seal kit. Use CR 111790-009 for direct ordering.
Q: What seal materials are used in this kit?
A: The kit uses nitrile (NBR) seals as the primary sealing element, PTFE back-up rings for support, and a wear ring. All materials conform to Crown OEM specifications for hydraulic cylinder durability.
Q: How do I know the cylinder seals have failed?
A: Symptoms include visible hydraulic fluid leakage from the cylinder body, spongy or unresponsive lift action, hissing during operation, or rapid drop when load is held. These indicate worn seals that require replacement.
Q: How often should hydraulic seals be replaced?
A: Seal replacement intervals depend on usage hours, operating temperature, and fluid contamination levels. Most industrial lift truck seals last 3-5 years. Monitor fluid condition and cylinder performance. Replace seals immediately upon detection of leakage.
