Parker/Commercial Intertech 391-2681-303 Buffer Ring

Parker/Commercial Intertech 391-2681-303 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 CM-391-2681-303. Catalog description: BU-90NBR-1.25x1/8-C/S(10).

Product Details

• Hercules part number: CM-391-2681-303
• Product type: Hydraulic sealing or repair component
• Reference brand/application: Parker/Commercial Intertech
• Approximate weight: 0.001 lb
• Catalog data source: 2026 US Mobile Kit Catalog

Catalog Application Data

• Equipment type: Telehandlers
• Catalog page reference: 526

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for CM-391-2681-303. 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 CM-391-2681-303 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.