Caterpillar 8C9144 Buffer Ring

Caterpillar 8C9144 Buffer Ring 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-8C9144. Catalog description: 4.50in. CAT 2PC BUFFER.

Product Details

• Hercules part number: CTC-8C9144
• Product type: Hydraulic sealing or repair component
• Reference brand/application: Caterpillar
• Approximate weight: 0.144 lb
• Catalog data source: 2026 US Seal Catalog

Catalog Application Data

• Catalog section: Rod Buffer Seals
• Style / kit type: CATERPILLAR® SPECIFIC BUFFER SEALS - 2 PIECE
• Material / grade reference: BRONZE FILLED PTFE SEAL RUBBER ENERGIZER
• Temperature range: -40° TO +220° F
• Pressure range: 0 TO 5,000 PSI
• Speed reference: 12 FT/SEC
• Catalog page reference: 221

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for CTC-8C9144. 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-8C9144 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.