Product Description
Hydraulic Seal Kit for Lift-Rite L-55 Pallet Jacks
The LF 20280 is a complete direct replacement hydraulic seal kit designed for Lift-Rite L-55 series pallet jack pump units. This kit includes all necessary seals for the L-55 hydraulic assembly, consolidating multiple seal configurations (previously referenced as 20278 and 20279) into one comprehensive replacement package. Manufactured from nitrile rubber with double-lip, pressure-energized design for reliable performance at pressures up to 3000 PSI, the kit is engineered to restore pump integrity and load-holding capability in manual pallet jacks. Compatible with standard ISO VG 32 hydraulic fluids and designed for the 2.50 inch bore and 1.25 inch rod specifications of the L-55 pump assembly.
Specifications
Hydraulic Specifications
| Compatible Hydraulic Unit | Lift-Rite L-55 hydraulic assembly |
| Bore Size | 2.50 inch |
| Rod Size | 1.25 inch |
| Seal Material | Nitrile rubber (NBR) and thermoplastic polymers |
| Seal Type | Double-lip, pressure-energized |
| Seal Type Classification | Primary pressure and dirt exclusion |
| Working Pressure | Up to 3000 PSI |
| Fluid Compatibility | ISO VG 32 hydraulic fluids |
Part Numbers
| Primary Part Number | LF20280 |
| Manufacturer Part Number | Lift-Rite 20280 |
| Direct Replacement Cross-References | LR20280, LiftRite 20280, 20280 |
| Superseded Part Numbers | 20278, 20279 |
| Compatible Models | Lift-Rite L-55 pallet jacks |
Frequently Asked Questions
Q: What is included in the LF 20280 L-55 seal kit package?
A: The LF 20280 is a complete seal kit for Lift-Rite L-55 pallet jacks that includes all necessary hydraulic seals for the L-55 series hydraulic assembly. This kit incorporates components previously referenced under part numbers 20278 and 20279, consolidating multiple seal configurations into one replacement package for the L-55 model.
Q: What bore and rod specifications does the LF 20280 L-55 seal kit address?
A: The LF 20280 is designed for Lift-Rite L-55 hydraulic units with a 2.50 inch bore diameter and 1.25 inch rod diameter. These dimensional specifications correspond to the standard L-55 series pump assembly used in Lift-Rite and Big Joe manual pallet jacks of that model generation.
Q: What material and pressure rating are specified for the LF 20280 seals?
A: The LF 20280 contains nitrile rubber seals with double-lip, pressure-energized design. These seals are rated for standard working pressures up to 3000 PSI. Nitrile material provides reliable performance across typical manual pallet jack operating temperature ranges and is resistant to common hydraulic fluid formulations.
Q: Are there cross-reference part numbers for the LF 20280 L-55 kit?
A: Yes. Cross-reference part numbers for the LF 20280 include LR20280, Lift-Rite 20280, LiftRite 20280, and 20280. These represent equivalent OEM or OEM-equivalent designations that may appear in older documentation or alternative supplier catalogs for the same L-55 seal kit.
Q: What is the failure symptom that indicates the LF 20280 needs replacement?
A: The primary failure indicator is visible or internal hydraulic fluid leakage from the pump assembly. You may observe fluid pooling beneath the pump or notice the pallet jack loses load holding ability over time. Reduced lifting speed or inability to achieve full lift height also suggests seal degradation. Once leakage begins, the entire seal kit should be replaced to restore pump integrity.