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.

  • RA 939-028

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  • Up to $10.97 off

    RA 540-062-03

    Regular price $71.29
    Sale price $71.29 Regular price $82.26
  • Up to $8.46 off

    RA 540-028-06

    Regular price $54.96
    Sale price $54.96 Regular price $63.42
  • RA 1015666-621

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  • RA 1015666-421, Seal Kit (Ultra Metals)
    Up to $20.57 off

    RA 1015666-421

    Regular price $133.68
    Sale price $133.68 Regular price $154.25
  • RA 030-504-008-003, Seal Kit
    Up to $9.31 off

    RA 030-504-008-003

    Regular price $39.54
    Sale price $39.54 Regular price $48.85
  • PR A-14026-1-TH, Prime Mover Seal Kit
    Up to $10.74 off

    PR A-14026-1-TH

    Regular price $41.72
    Sale price $41.72 Regular price $52.46
  • PR 23084-00

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  • MU 71343580, Seal Kit for Multiton

    MU 71343580

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  • MU 699, Seal Kit
    Up to $9.82 off

    MU 699

    Regular price $52.61
    Sale price $52.61 Regular price $62.43
  • MU 58797-001, Seal Kits for Multiton Electric Lift Truck

    MU 58797-001

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  • MU 51083917, Seal Kit for Multiton Manual Pallet Jack
    Up to $12.11 off

    MU 51083917

    Regular price $78.72
    Sale price $78.72 Regular price $90.83
  • MU 50469641, Seal Kit for Multiton Manual Pallet Jack
    Up to $12.11 off

    MU 50469641

    Regular price $78.72
    Sale price $78.72 Regular price $90.83
  • MU 21719-SLIM-TH, Seal kit for Multiton manual pallet jack

    MU 21719-SLIM-TH

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  • MU 07450464, Seal Kit for Multiton TM, J, M, T 45, T 50

    MU 07450464

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  • MO 6019, Seal Kit
    Up to $10.15 off

    MO 6019

    Regular price $43.73
    Sale price $43.73 Regular price $53.88
  • MO 3500, Seal Kit

    MO 3500

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  • MO 123500, Seal Kit
    Up to $10.15 off

    MO 123500

    Regular price $43.73
    Sale price $43.73 Regular price $53.88
  • LL P950556, Seal Kit-No Longer Available

    LL P950556

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  • LL P950550-6, Seal Kit-No Longer Available

    LL P950550-6

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  • LF PH-10280, Seal Kit
    Up to $11.79 off

    LF PH-10280

    Regular price $63.79
    Sale price $63.79 Regular price $75.58
  • Up to $23.86 off

    LF H20278

    Regular price $63.20
    Sale price $63.20 Regular price $87.06
  • Up to $23.86 off

    LF H10278

    Regular price $63.20
    Sale price $63.20 Regular price $87.06
  • LF 8577, Seal Kit, Lift Cyclinder

    LF 8577

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  • LF 20278-TH, Seal Kit
    Up to $11.45 off

    LF 20278-TH

    Regular price $41.60
    Sale price $41.60 Regular price $53.05
  • LF 10278-TH, Lf Seal Kit
    Up to $14.01 off

    LF 10278-TH

    Regular price $37.64
    Sale price $37.64 Regular price $51.65
  • Up to $23.86 off

    LF 10278H

    Regular price $63.20
    Sale price $63.20 Regular price $87.06
  • Up to $6.38 off

    HY 2310747

    Regular price $30.42
    Sale price $30.42 Regular price $36.80
  • Up to $5.22 off

    HY 2303974

    Regular price $32.67
    Sale price $32.67 Regular price $37.89
  • Up to $8.85 off

    HY 213757

    Regular price $25.99
    Sale price $25.99 Regular price $34.84
  • HY 2048665, Seal kit for Hyster W40Z, W45Z, W50Z

    HY 2048665

    Regular price $84.04
    Sale price $84.04 Regular price $74.66
  • Up to $4.97 off

    HY 1360141

    Regular price $32.25
    Sale price $32.25 Regular price $37.22
  • HY 1355714

    Regular price $55.09
    Sale price $55.09 Regular price $32.45
  • HP 102A, Complete Seal Kit
    Up to $8.38 off

    HP 102A

    Regular price $54.48
    Sale price $54.48 Regular price $62.86
  • GW 533, Complete Seal Kit ( 1-5/8 Ram)
    Up to $11.09 off

    GW 533

    Regular price $72.08
    Sale price $72.08 Regular price $83.17
  • GW 527, Seal Kit
    Up to $22.75 off

    GW 527

    Regular price $50.12
    Sale price $50.12 Regular price $72.87
  • GW 525-A, Seal Kit
    Up to $12.15 off

    GW 525-A

    Regular price $31.44
    Sale price $31.44 Regular price $43.59
  • GW 522, Seal Kit
    Up to $11.40 off

    GW 522

    Regular price $37.19
    Sale price $37.19 Regular price $48.59
  • GW 525, Seal Kit
    Up to $10.15 off

    GW 525

    Regular price $43.73
    Sale price $43.73 Regular price $53.88
  • GW 519, Complete Seal Kit
    Up to $22.46 off

    GW 519

    Regular price $47.05
    Sale price $47.05 Regular price $69.51
  • GW 5111, Seal Kit
    Up to $11.45 off

    GW 5111

    Regular price $41.60
    Sale price $41.60 Regular price $53.05
  • GW 524, Seal Kit
    Up to $12.73 off

    GW 524

    Regular price $29.92
    Sale price $29.92 Regular price $42.65
  • GW 511, Seal Kit
    Up to $11.45 off

    GW 511

    Regular price $41.60
    Sale price $41.60 Regular price $53.05
  • GW 510, Seal Kit
    Up to $14.01 off

    GW 510

    Regular price $37.64
    Sale price $37.64 Regular price $51.65
  • GSW 531, SEAL KIT
    Up to $26.04 off

    GSW 531

    Regular price $23.69
    Sale price $23.69 Regular price $49.73
  • GSK 531, SEAL KIT
    Up to $26.04 off

    GSK 531

    Regular price $23.69
    Sale price $23.69 Regular price $49.73
  • EC SST-PRK-TH, Ecoa Seal Kit

    EC SST-PRK-TH

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  • EA A191-TH, SEAL KIT
    Up to $11.80 off

    EA A191-TH

    Regular price $34.25
    Sale price $34.25 Regular price $46.05

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.