HERCULES
Miller Jv-Kr300-400 Rod Seal
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Miller Jv-Kr300-400 Rod Seal 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 MLR-JV-KR300-400. Catalog description: RK-I-U-1-4.000.
Product Details
- Hercules part number: MLR-JV-KR300-400
- Product type: Rod seal
- Reference brand/application: Miller
- Approximate weight: 0.103 lb
- Catalog data source: 2026 US Industrial Catalog
Catalog Application Data
- Catalog page reference: 74, 98
Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for MLR-JV-KR300-400. 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 MLR-JV-KR300-400 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.