Caterpillar 2666140 Seal Kit

Caterpillar 2666140 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 CTC-2666140. Catalog description: SK-I-U-10-35.00x70.00.

Product Details

• Hercules part number: CTC-2666140
• Product type: Hydraulic cylinder seal kit
• Reference brand/application: Caterpillar
• Approximate weight: 0.094 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: 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 37...

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for CTC-2666140. 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 CTC-2666140 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.