HERCULES
New Holland 511979 Wiper Seal
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New Holland 511979 Wiper Seal is a cylinder rod wiper available from WQC Parts.
This listing uses Hercules part number NH-511979. Catalog description: RCW-90NBR-1-1/2x2x1/4.
Product Details
- Hercules part number: NH-511979
- Product type: Wiper or scraper seal
- Reference brand/application: Wipers
- Approximate weight: 0.03 lb
- Catalog data source: 2026 US Mobile Kit Catalog
Catalog Application Data
- Equipment type: Loaders - Skid Steer
- Catalog page reference: 1072
Understanding This Part
- Material code NBR: nitrile rubber (Buna-N)
- Durometer: 90 (hardness value in the catalog description)
A rod wiper sits in the cylinder head to help keep dirt and other foreign material out as the rod moves. Match the rod diameter, wiper groove and mounting profile to the original component.
Nitrile is also known as Buna-N. Match the compound to the specified fluid and service conditions.
Durometer describes material hardness: a higher reading means a harder material on the same scale. It is not a pressure rating.
Fitment Verification
Before ordering, confirm the NH-511979 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.