Product Description
Lift-Rite LF 22318 U-Cup is an oil-resistant hydraulic piston seal for manual pallet jack hydraulic units, designed to retain fluid pressure in the pump assembly and prevent bypass. This elastomeric U-cup is specified for Lift-Rite manual pallet trucks and installs axially within the hydraulic piston bore. Suitable for operation with mineral oil-based hydraulic fluids from -20°C to 80°C.
Compatibility: Fits pallet jacks made by Lift-Rite, model Titan Series. Alternate model: Titan Serie. SKU: LF 22318
Specifications
Material & Construction
| Seal Hardness | 70 Shore A nominal |
Mechanical Specifications
| Functional Application | Retains hydraulic pressure in pump piston assembly for manual pallet trucks |
| Primary Function | Prevents hydraulic fluid bypass and maintains pressure during lifting operation |
Part Numbers & Compatibility
| OEM Part Number | LF 22318 |
| Manufacturer Part Number | 22318 |
Frequently Asked Questions
Q: What does the LF 22318 U-Cup seal do?
A: The LF 22318 is an oil-resistant elastomeric U-cup seal that retains hydraulic pressure in the pump piston assembly of Lift-Rite manual pallet trucks. It prevents hydraulic fluid bypass and maintains pressure during lifting operations.
Q: Which Lift-Rite models use seal LF 22318?
A: The LF 22318 is specified for Lift-Rite Titan Series manual pallet trucks. Confirm your jack model designation matches Titan Series before ordering this seal.
Q: What temperature range is the LF 22318 U-Cup rated for?
A: The LF 22318 operates from -20 degrees Celsius to 80 degrees Celsius when used with mineral oil-based hydraulic fluids. This range covers typical warehouse and cold storage environments.
Q: What is the Shore A hardness of the LF 22318 seal?
A: The LF 22318 has a nominal Shore A hardness of 70. This elastomeric hardness is specified to balance fluid sealing performance with piston bore fit.
Q: How is the LF 22318 U-Cup installed in the pump assembly?
A: The LF 22318 installs axially within the hydraulic piston bore. Do not force or stretch the seal during installation. Verify bore dimensions match the seal specification before assembly.
Q: What hydraulic fluid works with the LF 22318 seal?
A: Use mineral oil-based hydraulic fluids compatible with the Lift-Rite pump specification. Do not use synthetic fluids or non-mineral formulations unless they are explicitly approved by Lift-Rite, as incompatible fluids degrade elastomer seals.