Product Description
Toyota OEM part 00591-53398-81 is a BLUE GIANT hydraulic seal kit for manual pallet jack lift cylinder repair and maintenance. Designed for compatibility with Toyota manual pallet jacks, this kit supports bore diameters from 1.12 to 1.25 inches, rod diameters from 0.75 to 1.00 inches, and works with hydraulic systems rated up to 3000 PSI. Constructed of hydraulic-grade synthetic rubber, the kit ensures leak prevention and extended cycle life.
Specifications
Hydraulic
| Hydraulic Pressure – Maximum Rated | 3000 PSI maximum working pressure |
| Seal Type | Combined O-ring, dust wiper, and pressure seal designed for hydraulic cylinder shaft and bore interface |
Material & Construction
| Seal Material Specification | Hydraulic-grade synthetic rubber, suitable for ISO 6743 hydraulic fluids |
| Finish | Non-abrasive finish suitable for direct contact with precision-machined hydraulic components |
Part Numbers
| OEM Part Number | 00591-53398-81 |
| Manufacturer Part Number | 00591-53398-81 |
Frequently Asked Questions
Q: Does part 00591-53398-81 fit Toyota manual pallet jacks only?
A: Part 00591-53398-81 is designed for Toyota manual pallet jacks with lift cylinder bore diameters from 1.12 to 1.25 inches and rod diameters from 0.75 to 1.00 inches. Verify your equipment bore and rod dimensions match before ordering. This seal kit may have cross-compatibility with other OEM models using the same cylinder bore and rod specifications.
Q: What maximum pressure rating does this hydraulic seal kit support?
A: Part 00591-53398-81 is rated for a maximum working pressure of 3000 PSI. This rating applies to the combined O-ring, dust wiper, and pressure seal components. Do not use this kit in systems rated above 3000 PSI.
Q: What material is this seal kit constructed from?
A: Part 00591-53398-81 is constructed from hydraulic-grade synthetic rubber formulated for ISO 6743 hydraulic fluids. The material provides leak prevention, extended cycle life, and resistance to common mineral and synthetic hydraulic oils used in manual pallet jack systems.
Q: When should this seal kit be replaced?
A: Replace part 00591-53398-81 when you observe slow or jerky lift operation, audible hissing or leaking hydraulic fluid around the lift cylinder, or visible oil residue on the cylinder exterior. Seal degradation typically occurs after 2000 to 5000 operating cycles depending on usage intensity and fluid maintenance.
Q: Is this kit compatible with both mineral and synthetic hydraulic fluids?
A: Part 00591-53398-81 is designed for ISO 6743 hydraulic fluids, which includes most mineral-based hydraulic oils. Verify your system fluid type before use. Incompatible fluid types can cause seal degradation and system failure.