Seal Kit for Big Joe, Lift-Rite, Multiton
BJ 21719
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Compatibility
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Product Description
The Big Joe BJ 21719 hydraulic seal kit provides direct replacement sealing for manual pallet jack lift ram hydraulic systems. Engineered from high-grade nitrile rubber with reinforced elements, this kit restores hydraulic integrity and prevents leaks in 1-5/8 inch lift ram units. Rated for 3000 PSI system compatibility and suitable for ISO 32 and ISO 46 hydraulic oils. Available under multiple cross-reference part numbers including BJ21719 and 21719S, ensuring compatibility with Big Joe and compatible brand manual pallet jacks.
Specifications
Part Numbers & Compatibility
| Make | Big Joe, Lift-Rite, Multiton |
| Hydraulic Fluid Compatibility | Suitable for use with ISO 32 and ISO 46 hydraulic oils |
| Manufacturer Part Number | BJ 21719 |
| Cross-Reference Part Numbers | BJ21719, BJ-21719, BJ 21719-SLIM, 21719S |
Additional Specifications
| Working Pressure | 3000 PSI maximum hydraulic system compatibility |
| Port Specification | Compatible with hydraulic ports up to 3/4 inch NPT thread |
| Seal Material | High-grade nitrile rubber with reinforced thermoplastic elements |
Frequently Asked Questions
Q: What material is the BJ 21719 made from?
A: The BJ 21719 is constructed of high-grade nitrile rubber with reinforced thermoplastic elements. This combination provides durability and resistance to mineral-based hydraulic oils.
Q: What are the cross-reference part numbers for BJ 21719?
A: Cross-reference numbers include bj21719, bj-21719, BJ 21719-slim, and supersedes equivalent 21719s. The BJ 21719-slim variant is also available as a separate part number.
Q: What hydraulic fluid is compatible with the BJ 21719?
A: The BJ 21719 is compatible with iso 32 and iso 46 mineral hydraulic oils, which are standard fluids used in manual pallet jack systems.
Q: How do I know when to replace the BJ 21719?
A: Replace the BJ 21719 when signs of failure appear, such as slow or spongy pump operation, external leaks around the lift ram, or difficulty maintaining load height. Immediate replacement is recommended to prevent equipment damage.