Product Description
The Toyota 00591-57577-81 BT Super Seal Kit is a hydraulic pump seal kit designed for compatibility with select BT and Toyota manual pallet jacks. It includes high-performance NBR and polyurethane seals rated for 3000 PSI system pressure, engineered to restore hydraulic integrity in single-acting jack pumps. Equivalent to BT 129883-SUPER, this kit maintains pressure performance and fluid compatibility for ISO 32/46 hydraulic oils.
Specifications
Hydraulic/Pneumatic
| Seal Material | Nitrile rubber (NBR) and polyurethane, for hydraulic fluid compatibility |
Material & Construction
| Seal Hardness | 70 Shore A durometer (NBR), 90 Shore A durometer (polyurethane) |
Part Numbers
| OEM Part Number | 00591-57577-81 |
| Manufacturer Part Number | 00591-57577-81 |
| Cross-Reference Part Numbers | Equivalent to BT 129883-SUPER |
Frequently Asked Questions
Q: What equipment does the 00591-57577-81 Super Seal Kit fit?
A: The 00591-57577-81 is a hydraulic pump seal kit designed for BT and Toyota manual pallet jacks with single-acting pump systems. Verify your pallet jack model matches BT or Toyota specification and uses a single-acting pump before ordering.
Q: What cross-reference part replaces the 00591-57577-81?
A: The 00591-57577-81 is equivalent to BT part number 129883-SUPER. If your equipment documentation references the BT part number, this seal kit is the correct replacement. Both part numbers provide identical sealing performance.
Q: What seal materials are included in the 00591-57577-81 kit?
A: This kit includes high-performance NBR (nitrile rubber) and polyurethane seals. NBR seals are rated at 70 Shore A durometer hardness and polyurethane seals at 90 Shore A. Both materials are compatible with ISO 32/46 hydraulic oils and provide fluid-resistant performance.
Q: What system pressure does the 00591-57577-81 seal kit support?
A: The Super Seal Kit is engineered for 3000 PSI system pressure in single-acting jack pumps. Operating the jack above this pressure rating will cause seal failure and hydraulic leakage. Verify your pallet jack system pressure matches this specification.
Q: What are failure symptoms for worn-out hydraulic pump seals?
A: Worn seals cause visible hydraulic fluid leakage around the pump, loss of lifting pressure, slow pump operation, or inability to reach full lift height. Continued operation with leaking seals damages the pump and requires more extensive repairs.
Q: How long does the 00591-57577-81 seal kit last in manual pallet jack service?
A: Super Seal Kit performance depends on hydraulic fluid condition, system pressure maintenance, and usage frequency. In normal warehouse duty, expect 3 to 5 years of service. Clean fluid and proper maintenance extend seal life significantly.