Product Description
Toyota OEM ROL-LIFT hydraulic pump seal kit (SKU 00591-50369-81) for manual pallet jack rebuild; includes NBR seals and polyacetal back-up rings engineered to restore internal oil retention and rated for 3000 PSI hydraulic system pressure. Suited for 1.25 inch bore hydraulic units and compatible with multiple models of Toyota manual pallet jacks using ROL-LIFT assemblies.
Specifications
Hydraulic/Pneumatic
| Maximum System Pressure | 3000 PSI rated for manual pallet jack hydraulic circuits |
Material & Construction
| Seal Material Specification | Nitrile rubber (NBR) per ASTM D2000 for hydraulic fluid compatibility |
| Back-Up Ring Material | Polyacetal (Delrin, POM) back-up ring |
| Lubricant Compatibility | Designed for compatibility with ISO 32 and ISO 46 hydraulic oils |
Part Numbers
| Manufacturer Part Number | 00591-50369-81 |
| OEM Part Number | 00591-50369-81 |
Frequently Asked Questions
Q: What does the 00591-50369-81 seal kit contain?
A: The 00591-50369-81 is a Toyota OEM ROL-LIFT hydraulic pump seal kit that includes NBR nitrile rubber seals and polyacetal back-up rings engineered to restore internal oil retention in hydraulic pump assemblies.
Q: What is the pressure rating of the 00591-50369-81 seal kit?
A: The 00591-50369-81 is rated for 3000 PSI maximum system pressure in manual pallet jack hydraulic circuits. It is suited for 1.25 inch bore hydraulic pump units.
Q: What material properties do the seals in the 00591-50369-81 have?
A: Seals are manufactured from nitrile rubber (NBR) per ASTM D2000 specification, which provides strong compatibility with hydraulic oils and mineral-based fluids. Back-up rings are polyacetal (Delrin) to prevent extrusion and maintain seal integrity under pressure.
Q: Which Toyota manual pallet jack models use the 00591-50369-81 seal kit?
A: The 00591-50369-81 is compatible with multiple models of Toyota manual pallet jacks equipped with ROL-LIFT hydraulic pump assemblies. Confirm your equipment uses a 1.25 inch bore hydraulic pump before ordering.
Q: How often should the 00591-50369-81 seals be replaced?
A: Seal replacement is recommended during hydraulic pump rebuild or when leakage becomes visible around the pump body. Inspect the pump quarterly for external oil seepage. NBR and polyacetal materials typically last 3 to 5 years under normal operating conditions before degradation occurs.