HL-99 Seal Kit For Global 334475 Pallet Jack
SKU: HL 99
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Product Description
The HL-99 seal kit is a hydraulic unit seal replacement pack for the Global Industrial 334475 manual pallet jack (and equivalent Hu-Lift models like the HP25L 5500 lb pallet jack).
This kit contains all the critical seals, O-rings, and gaskets required to rebuild the pallet jack’s hydraulic pump unit. All components in the kit are manufactured to OEM specifications, including high-pressure main seals, wiper seals, and valve O-rings, ensuring a proper fit and long-lasting repair.
Cross References
This seal kit can also be found under part numbers:
Product Specifications
Features of this Product
The HL-99 seal kit includes all seals necessary to entirely rebuild the hydraulic unit on Global 334475 (and equivalent Hu-Lift HP25L) pallet jacks.
It features OEM-grade NBR and polyurethane seals precisely sized for all cylinders, pistons, and valves.
Replacing all seals stops leaks, drifting, and loss of lifting capacity.
Cost-effective and easy to install with basic tools, the kit extends jack life without costly pump replacement.
Includes all booster and ram seals needed for a complete overhaul, ensuring restored performance and clean operation up to the 5,500 lb rated capacity.
Warranty Information
We provide a 90-day limited warranty on this seal kit for manufacturing defects.
Stock Availability
In stock and ready to ship.
Our Return & Refund Policy
Unused seal kits can be returned within 30 days of purchase. Because this kit contains small wearable components, returns are only accepted if the kit is complete, unused, and in original condition (all seals present, clean, and uninstalled).
Please refer to our Return Policy for guidance on returning a product and the required information.
Not Sure If This HL-99 Kit Fits Your Equipment?
We can help confirm it. You can contact us at 832-239-5393 or 1-800-210-8170, email us at info@palletjackson.com, or use our live chat feature on our website.
Our team is available Monday through Friday, 9:00 am to 6:00 pm EST.
We have extensive cross-reference knowledge and can quickly determine which seal kit your jack needs. Even if your jack is not Global or Hu-Lift, we carry seal kits for nearly all pallet jack makes – let us guide you to the right one.
Frequently Asked Questions\
Q: What comes in the HL-99 seal kit?
A: It includes all soft seals needed to rebuild the hydraulic unit: main cylinder seal (U-cup or O-ring with backup), wiper seal, pump piston seal (leather or rubber), O-rings for check and relief valves, backup rings, and any copper washers (5–8 pieces total). No metal parts are included.
Q: Will this seal kit fix lifting problems?
A: If worn seals are the cause (typical), yes—it will restore pressure and fix issues like incomplete lifting, slow lowering, or leaks. If there’s cylinder scoring or a bent piston, you’ll need further repairs. Most of the time, replacing seals resolves the problem. Refill with clean hydraulic oil and bleed air afterward.
Q: Is the installation complex for beginners?
A: It’s straightforward if you’re handy. Remove the hydraulic unit, disassemble it to access the seals, replace them as needed, and then reassemble. No instructions are included, but guides are widely available. Expect 1–2 hours of work. Keep everything clean, and use lint-free rags.
Q: Are the new seals leather or rubber?
A: Older jacks used leather; modern kits use synthetic materials, such as polyurethane or nitrile rubber. They perform as well or better and fit the same grooves. O-rings are nitrile rubber.
Q: How often should seals be replaced?
A: Replace seals when you notice leaks or a decline in performance. Heavy-use jacks may require new seals every 5–8 years, while lighter-use jacks can last 10 years or more. Clean oil extends seal life.
Q: How can I find the right kit for a different brand?
A: Measure the main ram, or see if there are any parts labeled on the jack. Alternatively, contact us with a photo or model number. In many cases, even if brand names differ, the internal guts are the same. For example, some big retailers’ pallet jacks are Hu-Lift or Noblelift units. If it turns out to be Hu-Lift under the hood, this HL-99 will do. If not, provide your jack’s make, model, or measurements, and we’ll help identify the correct kit.
Frequently Bought Together
Customers who purchase this seal kit for their pallet jack often also buy the following complementary items:
Explore our Global Industrial and Hu Lift Catalog for additional replacement parts and kits.
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