John Deere 1237120 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 JD-1237120. Catalog description: BACK-UP RING (1). Product Details Hercules part number: JD-1237120 Product type: Hydraulic sealing or repair component Reference brand/application: John Deere Approximate weight: 0.003 lb Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for JD-1237120. It is intended to help restore sealing performance, reduce leakage, and support reliable equipment repair when correctly matched to the application. Fitment VerificationBefore ordering, confirm the JD-1237120 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.
