Royco® 27

Product Description: Aircraft and instrument, gear bearing, and actuator screw grease. An advanced synthetic ester based grease paired with a lithium stearate thickener and robust additives that impart corrosion, oxidation and rust inhibition for extreme pressure anti-wear properties. This system is designed for highly loaded actuators, gears and high-speed bearings as well as instruments over broad temperatures.

Specification: MIL – PRF – 23827 TYPE 1

NATO Specification: G-354

Joint Service Designation: XG-287

MIL-SPEC Scope: This specification covers the requirements for one grade of grease for use at extremely low temperatures on aircraft and instruments. This grease is effective in the temperature range from -73 to 121 ⁰C. The type I grease is identified by NATO code Number G-354.

Shelf Life:

  • US Military 2 Years
  • Commercial 5 Years
  • NATO 3 Years

Tariff Code: 3403.99.0000

Material: Royco® Synthetic Ester Based Grease
Acrylonitrile Poor to Good
Acrylonitrile-butadiene rubber (Perbunan®) Fair to Good
Butyl rubber Poor to Fair
Flurocarbon (Viton®) Very Good
Methacrylate Poor to Fair
Natural rubber/latex Poor
Poly (ethylene) Good
Polyamine (Nylon) Poor
Polychloroprene (Neoprene® Poor
Polyester Poor to Fair
PTFE (Teflon® ) Very Good
Polyvinyl chloride (PVC) Poor
Silicone Poor to Fair
Styrene-butadiene or styene-butadiene rubber (SBR) or BunaS Poor
National Stock Number Grade Amount Container
9150-00-935-4017 Type 1 14 oz. Cartridge
9150-00985-7244 Type 1 4 oz. Tube
9150-00-985-7245 Type 1 8 oz. Tube
9150-00-985-7246 Type 1 1.75 lb. Can
9150-00-985-7247 Type 1 6.5 lb. Can
9150-00-985-7248 Type 1 35 lb. Can

Lubricant, High Temperature Molybdenum Disulfide Grease,  Power Transmission Hydraulic FluidHighly Refined Mineral OilSynthetic Hydrocarbon Base Hydraulic Fluid