Seal Kit for Forklifts & Pallet Jacks - Fits Clark
GSK 512-1
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Compatibility
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Product Description
Seal kit GSK 512-1 by Liftsplus.com is engineered for maintenance of hydraulic cylinders in forklifts and pallet jacks, featuring NBR, urethane, and PTFE seals; designed for standard bores and hydraulic systems up to 3000 PSI. Industry-standard dimensional and material specifications ensure compatibility in OEM and aftermarket service.
Specifications
Part Numbers & Compatibility
| Make | Clark |
| Kit Application | Seal kit for hydraulic cylinder maintenance in material handling equipment |
| Manufacturer Part Number | GSK 512-1 |
| Superseding/Evolution Part Number | GSK 512 (base kit, alternate SKU found in product line) |
| Superseding Evolution Part Number | GSK 512 (base kit, alternate SKU found in product line) |
| Compatibility | Compatible with OEM and aftermarket service |
Performance Specifications
| Operating Tolerance | Seal dimensional tolerance: ±0.005 inch |
| Pressure Rating | Designed for hydraulic systems up to 3000 PSI |
Additional Specifications
| Seal Material | Nitrile rubber (NBR) seals, urethane back-up rings, PTFE tube end seals |
| Seal Profile | Double-acting U-seal profile in accordance with ISO 5597 |
| Seal Hardness | Nitrile seals: 70 Shore A, Urethane rings: 90 Shore A, PTFE tube ends: ASTM D4894 compliant |
Frequently Asked Questions
Q: What makes and models is the GSK 512-1 compatible with?
A: The GSK 512-1 is designed for use in hydraulic cylinders of Clark equipment. Verify your cylinder bore diameter and port thread size match the kit specifications before ordering.
Q: What materials are used in the GSK 512-1 seal kit?
A: The GSK 512-1 contains nitrile rubber (nbr) primary seals, urethane back-up rings, and ptfе tube seals. This material combination provides excellent chemical resistance to hydraulic fluids and reliable sealing across standard bore sizes in material handling cylinders.
Q: How long can I expect the seals in the GSK 512-1 to last?
A: Seal lifespan varies with equipment usage intensity and maintenance. Seals typically perform reliably for 2000 to 3000 operating hours. Replace the kit if internal leakage develops, cycle speed reduces, or external weeping occurs at cylinder ports.
Q: Does the GSK 512-1 replace older parts?
A: Yes, the GSK 512-1 is the current-generation successor to older parts. It features updated nbr and ptfе specifications with improved dimensional tolerances for better fitment in modern and legacy hydraulic cylinders. Confirm your equipment cylinder specifications before ordering.