HERCULES
Caterpillar 2863591 Seal Kit
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Caterpillar 2863591 Seal Kit is a cylinder seal kit available from WQC Parts.
This listing uses Hercules part number CTC-2863591. Catalog description: SK-I-U-10-25.00x40.00.
Product Details
- Hercules part number: CTC-2863591
- Product type: Hydraulic cylinder seal kit
- Reference brand/application: Caterpillar
- Approximate weight: 0.024 lb
- Catalog data source: 2026 US Mobile Kit Catalog
Catalog Application Data
- Equipment type: Loaders - Skid Steer; Loaders - Track Skid Steer; Telehandlers
- Catalog page reference: 352, 354, 356, 357, 359, 360, 362, 363, 364, 365, 367, 368, 369, 370, 371, 372, 373, 374, 376, 377, 378, 37...
Understanding This Seal Kit
- Wiper code I: insert wiper
- Rod seal code U: U-seal
- Piston seal code 10: piston seal
The code separates the wiper, rod-seal and piston-seal arrangements so you can compare them with the cylinder being repaired. A wiper helps exclude dirt at the rod entry; rod seals and piston seals fit different locations in the cylinder.
These terms explain the Hercules identification code shown above. Match the kit reference to the original assembly; the code is an identification aid, not a complete packing list.
Fitment Verification
Before ordering, confirm the CTC-2863591 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.