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Hydraulic Seal Replacement Kits for Lift Trucks & Pallet Jacks

Restore hydraulic performance and stop leaks with the right seal replacement kit for your pallet jack or forklift. Our Seal Replacement Kits collection includes complete hydraulic cylinder seal kits, pump seal kits, and o-ring assortments matched to the most common makes and models in the industry — so you can complete a full hydraulic rebuild without hunting down individual seals.

Compatible equipment brands include Crown, Toyota, BT Prime Mover, Multiton, Raymond, Yale, Hyster, Uline, and other major OEM and aftermarket manufacturers. Kits are matched by equipment make, model, and serial number range, as well as by pump manufacturer and cylinder bore size.

Kit types available:

  • Hydraulic Cylinder Seal Kits — all seals, o-rings, and wipers needed to rebuild a lift cylinder
  • Pump Seal Kits — seals and o-rings for hydraulic pump units (Monarch, Parker, Haldex, and others)
  • Complete Hydraulic Rebuild Kits — cylinder and pump seals bundled for a full system overhaul
  • O-Ring Assortments — general-purpose metric and SAE o-ring sets for field repairs

How to select the right seal kit: Identify your equipment's make, model, and serial number from the data plate. For pump seal kits, note the pump manufacturer (often stamped on the pump body) — common suppliers include Monarch, Parker, and Haldex. For cylinder kits, note the cylinder bore diameter and rod diameter. Matching these specs ensures the seals seat correctly and hold pressure.

Common use cases: Scheduled hydraulic maintenance, repairing slow or failed lift function, stopping oil weeping from cylinder rods or pump fittings, and full hydraulic rebuilds during equipment refurbishment. Replacing seals proactively at 2,000–3,000 operating hours is standard practice for high-cycle equipment.

All kits ship from our US warehouse. Use the brand and model filters above to find your kit, or search by pump manufacturer and model for a direct match.

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  • GSK 533, Hydraulic Cylinder Seal Kit for Forklift & Pallet Jack Repair

    GSK 533

    $86.61
    $86.61
  • GSK 532, Hydraulic Seal Kit for Equipment Repair 3000 PSI Indus

    GSK 532

    $64.63
    $64.63
  • GSK 529, Seal kit for Scot 59 pump

    GSK 529

    $41.00
    $41.00
  • GSK 527, Hydraulic Seal Kit for Pallet Jack & Forklift Cylinders

    GSK 527

    $35.49
    $35.49
  • GSK 525-2, Hydraulic Seal Kit for Forklift

    GSK 525-2

    $41.18
    $41.18
  • GSK 524, Seal Kit for Manual Pallet Jack

    GSK 524

    $33.89
    $33.89
  • GSK 525, Hydraulic Seal Kit for Manual Pallet Jack Cylinders - OEM Equi

    GSK 525

    $41.18
    $41.18
  • GSK 521, Interthor Hydraulic Seal Kit for Pallet Jacks
    Up to $5.03 off

    GSK 521

    $78.74
    $78.74 $83.77
  • GSK 519, Hydraulic Pump & Cylinder Shaft Seal Kit

    GSK 519

    $52.47
    $52.47
  • GSK 520, Hydraulic Seal Kit for 2-INCH Bore, 1.25-INCH Rod Diameter

    GSK 520

    $35.49
    $35.49
  • GSK 518, Nsk G518-KIT+J Bearing Housing Seal Kit for SNL518/SNU518 Plummer Bloc

    GSK 518

    $48.72
    $48.72
  • GSK 517, OEM Hydraulic Seal Kit for Forklifts and Pallet Jacks

    GSK 517

    $41.07
    $41.07
  • GSK 516, Hydraulic Seal Kit for Hydraulic Jack & Forklift Ram Cylinders

    GSK 516

    $41.07
    $41.07
  • GSK 514, Hydraulic Cylinder Seal Kit for Electric Lift Truck

    GSK 514

    $39.01
    $39.01
  • GSK 515, Hydraulic Seal Kit for Forklift & Pallet Jack Cylinders

    GSK 515

    $44.91
    $44.91
  • GSK 512-1, Seal Kit for Forklifts & Pallet Jacks

    GSK 512-1

    $33.89
    $33.89
  • GSK 511, Granite & Marble Sealer and Color Enhancer - Solvent-Based

    GSK 511

    $49.15
    $49.15
  • GSK 510, Hydraulic Seal Kit for Pallet Jacks
    Up to $6.76 off

    GSK 510

    $37.64
    $37.64 $44.40
  • CRN-43023-1, Hydraulic Seal Kit for Crown Manual Pallet Jack
    Up to $7.94 off

    CRN-43023-1

    $43.92
    $43.92 $51.86
  • CR 44648-TH, Cr Seal Kit, Complete

    CR 44648-TH

    $52.47
    $52.47
  • AT AP362-TH, Lo-Lift Seal Kit for Atlas and Lo-Lift Manual Pallet Jack

    AT AP362-TH

    $39.34
    $39.34
  • A000035640, OEM Hydraulic Cylinder Seal Kit for Forklifts
    Up to $2.39 off

    A000035640

    $57.29
    $57.29 $59.68
  • A000033250, Lift Cylinder Seal Kit by - 3000 PSI - Fits Caterpillar, Mitsubishi
    Up to $3.36 off

    A000033250

    $80.49
    $80.49 $83.85
  • A000013051, Hydraulic Seal Kit by - Fits Caterpillar
    Up to $2.10 off

    A000013051

    $50.37
    $50.37 $52.47
  • 40203, Mobile Seal Kit for Forklift
    Up to $10.15 off

    40203

    $43.73
    $43.73 $53.88
  • 2I7670, Hydraulic Cylinder Seal Kit by Liftsplus.com

    2I7670

    $57.19
    $57.19
  • 2I7671, Hydraulic Seal Kit for 4.5 Inch Bore Cylinders - OEM 185-7671

    2I7671

    $48.72
    $48.72
  • 00591-31554-81, Mobile Seal Kit for Toyota Forklift
    Up to $10.15 off

    00591-31554-81

    $43.73
    $43.73 $53.88
  • 00591-53459-81, Mobile Seal Kit for Forklift Hydraulic Cylinders
    Up to $10.15 off

    00591-53459-81

    $43.73
    $43.73 $53.88
  • 2I7189, Hydraulic Seal Kit for Manual Pallet Jack - Fits Caterpillar

    2I7189

    $46.13
    $46.13
  • Up to $12.42 off

    YL 580028974

    $40.72
    $40.72 $53.14
  • Up to $4.12 off

    YL 580026957

    $26.73
    $26.73 $30.85
  • Up to $8.22 off

    YL 520329810

    $53.47
    $53.47 $61.69
  • Up to $6.94 off

    YL 518793650

    $38.49
    $38.49 $45.43
  • WE 274082, Seal Kit for Wesco CPII, 272778, 5000 Series
    Up to $11.80 off

    WE 274082

    $34.25
    $34.25 $46.05
  • Up to $21.96 off

    UL H-1785-SK

    $142.76
    $142.76 $164.72
  • Up to $4.97 off

    TO 00591-76593-81

    $32.25
    $32.25 $37.22

  • TO 00591-76590-81

    $55.09
    $55.09 $32.45
  • Up to $8.46 off

    TO 00591-75069-81

    $54.96
    $54.96 $63.42
  • Up to $16.93 off

    TO 00591-73838-81

    $55.65
    $55.65 $72.58

  • TO 00591-58852-81

    $55.09
    $55.09 $32.45
  • Up to $4.97 off

    TO 00591-44651-81

    $32.25
    $32.25 $37.22

  • TO 00591-40458-81

    $55.09
    $55.09 $32.45

  • TO 00590-40809-71

    Call for Price
  • Up to $8.46 off

    TO 00590-04544-71

    $54.96
    $54.96 $63.42
  • TI 85-PT, Marco Tiger Seal Kit
    Up to $13.44 off

    TI 85-PT

    $29.37
    $29.37 $42.81
  • TH A-28-3K, Seal Kit for TallyHo 3000

    TH A-28-3K

    Call for Price
  • RL T5AOK-SLIM, Slim Seal Kit
    Up to $9.40 off

    RL T5AOK-SLIM

    $53.45
    $53.45 $62.85

Choosing a seal kit

A seal kit replaces the wear items inside a hydraulic pump unit — the parts that harden, shrink and weep long before anything metal fails. Replacing the seals is usually far cheaper than replacing the pump.

Signs the seals have gone

  • The forks drift down under load instead of holding
  • Oil weeping around the pump body or ram
  • The handle needs more strokes than it used to to reach full lift
  • Visible fluid on the floor beneath the unit

What we stock

Seal kits for both manual and electric equipment, covering Crown, Toyota, BT Prime Mover, Multiton, Blue Giant and Mobile among others. Kits are matched to the specific hydraulic unit rather than to the truck, so two trucks of the same brand can take different kits.

Before you order

Identify the hydraulic unit, not just the truck — the unit is normally stamped with its own number. If you are unsure, the hydraulic unit diagrams show the exploded view for most common units, or call 1-800-669-7554 with your model and serial number.