Royco® 783

Product Description: A super clean, mineral based, hydraulic fluid designed with oxidation, and anti-war performance in mind. This is also and anti-wear performance in mind. This is also an excellent preservative fluid.

Specification: MIL – PRF – 6083

NATO Specification: C-635

Joint Service Designation: PX-26

MIL-SPEC Scope: This specification covers one grade of petroleum base hydraulic fluid that is rust inhibited and used both as a preservative for hydraulic systems and components as well as being an operational fluid. The hydraulic fluid is identified by Military Symbol OHT and NATO Symbol C-635.

Shelf Life:

  • US Military 2 Years
  • Commercial 4 Years
  • NATO 4 Years

Tariff Code: 2710.19.4000

Material: Mineral Hydraulic Oils
Acrylonitrile Good
Acrylonitrile-butadiene rubber (Perbunan®) Good
Butyl rubber Not Accept-able to Poor
Flurocarbon (Viton®) Accept-able
Methacrylate Good
Natural rubber/latex Poor to Fair
Poly (ethylene) Good
Polyamine (Nylon) Poor to Good
Polychloroprene (Neoprene® ) Fair to Good
Polyester Good
PTFE (Teflon® ) Accept-able
Polyvinyl chloride (PVC) Poor to Good
Silicone Poor to Good
Styrene-butadiene or styene-butadiene rubber (SBR) or Buna S Poor
National Stock Number Grade Amount Container
9150-00-935-9807 1 quart Can
9150-00-935-9808 1 gal Can
9150-00-935-9809 5 gal Can
9150-00-935-9810 55 gal Drum

Preservative Fluid, Landing Gear Fluid, Mineral Oil Lubricants, Aircraft Fuel, Turbine Engine Oil