Product Description
Toyota CR Seal Kit, Complete—OEM part number 00591-43117-81—is a replacement seal kit for manual pallet jack hydraulic cylinders. Compatible with Toyota pallet trucks, engineered for 2-inch bore and 1-inch rod cylinders, constructed from NBR, PU, and polyacetal materials to support continuous-duty at 3000 PSI working pressure.
Specifications
Dimensional
| O-Ring Cross-Section | 0.139 inch nominal |
Hydraulic/Pneumatic
| Seal Material Specification | Nitrile rubber (NBR) and PU-based dynamic sealing elements |
| Operating Pressure Rating | Maximum working pressure: 3000 PSI |
Material & Construction
| Back-Up Ring Material | Polyacetal thermoplastic (POM) |
Part Numbers & Compatibility
| OEM Part Number | 00591-43117-81 |
| Manufacturer Part Number | 00591-43117-81 |
Performance
| Duty Cycle Rating | Continuous hydraulic operation, 120 cycles/hour maximum |
Frequently Asked Questions
Q: What cylinder bore and rod sizes does Toyota seal kit 00591-43117-81 fit?
A: This CR seal kit is engineered for 2-inch bore and 1-inch rod cylinders commonly found in Toyota manual pallet jacks. Verify your equipment cylinder bore and rod dimensions before ordering. This kit is compatible with equivalent manual pallet jack cylinders from other manufacturers using the same bore and rod specifications.
Q: What seal materials and O-ring specifications are included in kit 00591-43117-81?
A: This kit contains nitrile rubber (NBR) and polyurethane (PU) dynamic sealing elements plus polyacetal backup rings. The nominal O-ring cross section is 0.139 inch. Operating pressure rating is maximum 3000 PSI working pressure. Material composition supports continuous-duty hydraulic operation in manual pallet jack cylinders.
Q: Is kit 00591-43117-81 interchangeable with other Toyota CR seal kits?
A: This is an OEM Toyota CR seal kit (part number 00591-43117-81). Cross-reference availability depends on specific cylinder bore, rod diameter, and port configuration. Verify exact bore and rod dimensions before ordering. Do not substitute with kits designed for different bore sizes or pressure ratings.
Q: What is the typical replacement interval for this hydraulic cylinder seal kit?
A: NBR and PU seals in manual pallet jack cylinders typically require replacement every 2 to 4 years depending on usage, ambient temperature, and hydraulic fluid condition. Replace immediately if you observe internal leakage, reduced cylinder extension speed, or excessive rod-end drift. More frequent replacement may be needed in high-use or high-temperature environments.