Cascade 563907 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 CAS-563907. Catalog description: BU-90URE-4.875x1/8-C/S(1). Product Details Hercules part number: CAS-563907 Product type: Hydraulic sealing or repair component Reference brand/application: Case Approximate weight: 0.004 lb Catalog data source: 2026 US Mobile Kit Catalog, 2026 US Industrial Catalog Catalog Application Data Equipment type: Loaders - Wheel Catalog page reference: 51, 169 Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for CAS-563907. 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 CAS-563907 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.
