Product Description
Seal Kit Hl Hfj-700
Frequently Asked Questions
Q: Which jack model is the FJ HLSK-7 seal kit designed for?
A: The FJ HLSK-7 is the correct seal kit for the FJ HFJ700A-N 7-ton forklift jack and compatible 7-ton jacks from Crown, Toyota, Raymond, Yale, and Hyster. This kit contains all seals and gaskets required for complete hydraulic cylinder overhaul. Do not use the 4-ton FJ HLSK kit; seal dimensions and pressure ratings differ by tonnage.
Q: What is included in the FJ HLSK-7 seal kit contents?
A: The FJ HLSK-7 contains rod seals, piston seals, head gaskets, cylinder port gaskets, wiper rings, and stainless steel fasteners for a full FJ HFJ700A-N cylinder overhaul. All seals are precision-molded to OEM specifications and tested to withstand hydraulic pressures up to 280 bar, matching the 7-ton jack design envelope.
Q: What is the expected service life of the FJ HLSK-7?
A: With proper hydraulic fluid maintenance and consistent operation within load ratings, the FJ HLSK-7 provides 5 to 7 years of service life. Heavy-duty applications with daily cycling, cold storage environments, or contaminated hydraulic fluid may reduce seal durability. Replace the kit when external leaks develop or pressure performance drops.
Q: What elastomer materials are used in the FJ HLSK-7?
A: The FJ HLSK-7 contains premium Nitrile and PTFE seals engineered for high-pressure hydraulic systems. These materials resist mineral oil, provide temperature stability from -20°C to +90°C, and maintain elasticity through continuous pressure cycling in heavy material handling environments. All seals meet ISO 4413 performance standards for industrial hydraulics.
Q: Can the FJ HLSK-7 be cross-referenced to other manufacturers?
A: The FJ HLSK-7 is equivalent to seal kits for 7-ton jacks from Crown, Toyota, Raymond, Yale, Hyster, Jungheinrich, and Linde. Confirm exact compatibility by matching the jack model number, tonnage designation, and hydraulic circuit port configuration to your equipment documentation before ordering to avoid fit and performance issues.