Product Description
Toyota OEM Blue Giant Seal Kit 00591-31549-81 for manual pallet jacks. Kit includes hydraulic oil and O-ring seals constructed from nitrile rubber for use in 1.500 inch bore hydraulic cylinders up to 3000 PSI. Compatible with Blue Giant hydraulic units on Toyota manual pallet trucks.
Specifications
Hydraulic
| Operating Fluid Compatibility | Mineral oil hydraulic fluids, ISO VG 32–46 |
Material
| Seal Material | Nitrile rubber (NBR), 70 Shore A hardness |
| Backup Ring Material | Polyethylene or PTFE (specific to kit configuration) |
| O-ring Material | Nitrile (Buna-N) per ASTM D2000 |
Part Numbers
| OEM Part Number | 00591-31549-81 |
| Manufacturer Part Number | 00591-31549-81 |
Frequently Asked Questions
Q: What does the Toyota OEM Blue Giant Seal Kit 00591-31549-81 contain?
A: The 00591-31549-81 is a complete hydraulic seal kit containing nitrile rubber O-ring seals, backup rings, and hydraulic oil. The seals are constructed from 70 Shore A nitrile rubber and engineered for 1.500 inch bore hydraulic cylinders rated to 3000 PSI.
Q: Which pallet jack models use the 00591-31549-81 seal kit?
A: The 00591-31549-81 is compatible with Toyota manual pallet trucks equipped with Blue Giant hydraulic units. Verify your pallet jack has a 1.500 inch cylinder bore and operates on mineral oil hydraulic fluid before ordering.
Q: What is the maximum operating pressure for the 00591-31549-81 seal kit?
A: The 00591-31549-81 seal kit is rated for hydraulic pressures up to 3000 PSI. The nitrile rubber construction and polyethylene or PTFE backup rings provide reliable sealing at standard pallet jack operating pressures.
Q: Can the 00591-31549-81 seal kit be used with synthetic hydraulic oils?
A: The 00591-31549-81 is designed for mineral oil compatibility only. Do not use synthetic or bio-based hydraulic fluids, as nitrile rubber seals are not rated for extended exposure to incompatible fluid types.
Q: How long does the 00591-31549-81 seal kit typically last before replacement is needed?
A: Seal kit lifespan depends on usage intensity, maintenance, and operating conditions. Replace the 00591-31549-81 if you observe hydraulic leakage around the cylinder, reduced lifting force, or difficulty holding load. Regular maintenance and oil checks extend seal life.