Product Description
GSK 521 is an Interthor LX hydraulic seal kit engineered for manual pallet jack hydraulic units. The kit contains high-pressure NBR seals, O-rings, and precision fitments for pump, ram, and valve body service. Designed for use in systems up to 3000 PSI, compatible with bore sizes from 1.25 to 1.50 inches, and suitable for mineral hydraulic oils ISO VG 32 to 46. Each component meets industry standards for dimensional accuracy and service life.
Specifications
Hydraulic
| Seal Type | High-pressure nitrile rubber seals, suitable for hydraulic fluid ISO 32 |
| Maximum System Pressure | Rated for hydraulic systems up to 3000 PSI |
Material
| Seal Material | NBR (Nitrile Butadiene Rubber), Shore A hardness 70 ±5 |
Part Numbers
| OEM Part Number | GSK 521 |
| Manufacturer Part Number | GSK 521 |
Frequently Asked Questions
Q: What bore sizes does the GSK 521 hydraulic seal kit fit?
A: The GSK 521 is compatible with bore sizes from 1.25 to 1.50 inches. This range covers manual pallet jack pump, ram, and valve body applications across multiple OEM brands.
Q: What seal materials are included in the GSK 521?
A: The GSK 521 contains high-pressure NBR (nitrile butadiene rubber) seals with Shore A hardness 70 ±5, plus precision O-rings and fitments for pump, ram, and valve body service. All components meet industry standards for dimensional accuracy.
Q: What hydraulic fluid types are compatible with the GSK 521?
A: The GSK 521 is designed for mineral hydraulic oils ISO VG 32 to 46. Verify your equipment specifies compatibility with these fluid grades before use.
Q: What is the maximum pressure rating for the GSK 521?
A: The GSK 521 is rated for hydraulic systems up to 3000 PSI maximum system pressure. It is engineered for manual pallet jack pump and cylinder repair applications.
Q: Which manual pallet jack brands use the GSK 521 seal kit?
A: The GSK 521 is compatible with manual pallet jacks from Crown, Toyota, Raymond, Yale, and similar manufacturers. Confirm bore size and seal cavity dimensions match your equipment.
Q: What do the precision fitments in the GSK 521 include?
A: The GSK 521 includes fitments for pump, ram, and valve body service. Each component meets precision dimensional accuracy standards for reliable sealing performance.