Heil 26-3977-13 Seal Kit

Heil 26-3977-13 Seal Kit is a Hercules catalog product available from WQC Parts for hydraulic cylinder, seal kit, pump, motor, valve, and heavy-equipment repair applications.

This listing uses Hercules part number HL-26-3977-13. Catalog description: RW-90URE-4x4-1/2x1/4.

Product Details

• Hercules part number: HL-26-3977-13
• Product type: Hydraulic cylinder seal kit
• Reference brand/application: Retainer Ring
• Approximate weight: 0.04 lb
• Catalog data source: 2026 US Mobile Kit Catalog

Catalog Application Data

• Equipment type: Forklifts - Rough Terrain
• Catalog page reference: 580

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for HL-26-3977-13. It is intended to help restore sealing performance, reduce leakage, and support reliable equipment repair when correctly matched to the application.

Fitment Verification

Before ordering, confirm the HL-26-3977-13 reference against your OEM reference number, machine model, cylinder location, bore and rod size, pump/motor series, and serial-number range. Manufacturer names and part numbers are used for identification and fitment reference only. If you are unsure, compare the old parts, measurements, and parts-book callout before installation.