HERCULES
Hyco B9971-988 Seal Kit
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Hyco B9971-988 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 HY-B9971-988. Catalog description: IRET-STL-9.75X.37WX.21CS.
Product Details
- Hercules part number: HY-B9971-988
- Product type: Hydraulic cylinder seal kit
- Reference brand/application: Hydro-Line
- Approximate weight: 0.662 lb
- Catalog data source: 2026 US Mobile Kit Catalog
Catalog Application Data
- Equipment type: Loaders - Wheel
- Model or series reference: 650/1
- Catalog page reference: 641, 643, 645
Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for HY-B9971-988. 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 HY-B9971-988 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.