Product Description
Toyota 00591-75311-81 SUPER SEAL KIT for manual pallet jack lift cylinder, includes hydraulic rod and piston seals, wiper, O-rings, back-up rings. Designed for working pressure up to 3000 PSI, rod diameter 18–22 mm, bore diameter 23–28 mm. OEM replacement for hydraulic service. Polyurethane/nitrile construction, rated -25°C to +120°C.
Specifications
Hydraulic/Pneumatic
| Seal Material | High-performance polyurethane and nitrile rubber for hydraulic applications |
| Seal Kit Part Number | 00591-75311-81 |
Material & Construction
| Seal Hardness | Polyurethane seals rated at 85 Shore A hardness; nitrile O-rings at 70 Shore A |
Part Numbers
| OEM Part Number | 00591-75311-81 |
| Manufacturer Part Number | 00591-75311-81 |
Frequently Asked Questions
Q: What does this seal kit contain?
A: This Toyota 00591-75311-81 SUPER SEAL KIT includes hydraulic rod seals, piston seals, wiper rings, O-rings, and back-up rings. All components are designed to work together as a complete seal assembly for manual pallet jack lift cylinders.
Q: What equipment does this seal kit fit?
A: This OEM seal kit is designed for Toyota manual pallet jacks with hydraulic lift cylinders. It is also compatible with equivalent manual pallet jack models from Crown, Raymond, and similar manufacturers using the same rod diameter (18–22 mm) and bore diameter (23–28 mm) specifications. Verify your cylinder dimensions before ordering.
Q: What are the material specifications for these seals?
A: The rod and piston seals are constructed from high-performance polyurethane rated at 85 Shore A hardness. The O-rings are nitrile rubber at 70 Shore A hardness. This combination provides durability in hydraulic fluid environments and rated for temperatures from -25°C to +120°C with working pressure up to 3000 PSI.
Q: When should this seal kit be replaced?
A: Replace this seal kit if you observe hydraulic fluid leakage from the lift cylinder, loss of lifting pressure, or if the cylinder no longer maintains load when fully raised. Seal wear typically occurs after 2–5 years of regular use depending on operating conditions and hydraulic fluid maintenance. Contaminated hydraulic fluid accelerates seal degradation.
Q: What are the cross-reference part numbers for this kit?
A: The OEM part number and manufacturer part number are both 00591-75311-81. This is a Toyota OEM seal kit with no direct cross-reference to aftermarket brands. Always verify that your cylinder dimensions match the specified rod diameter (18–22 mm) and bore diameter (23–28 mm) before ordering to ensure proper fit.
Q: How should these seals be stored before use?
A: Store this seal kit in its original packaging in a cool, dry location away from direct sunlight and extreme temperatures. Keep the seals protected from dust, dirt, and hydraulic fluid contamination until they are ready to be used. Properly stored seals maintain their elasticity and performance characteristics for several years.