Royco® 885 is a low-volatility, diester-based synthetic instrument and bearing oil with oxidation and corrosion inhibitors, anti-foaming properties, and excellent low-temperature performance for precision aircraft systems.
Royco® 885 Synthetic Base Instrument and Bearing Oil (part number 885-5GL) is a light amber, diester-based synthetic lubricant formulated with additives for oxidation inhibition, corrosion protection, anti-foaming, and rust prevention. Designed for applications requiring minimal evaporation and reliable performance across a wide temperature range, Royco 885 is used in aircraft instruments, air cycle equipment, bearings, and precision accessories. The fluid is qualified to MIL-PRF-6085F and Boeing BMS 3-7. Due to its synthetic base, compatibility with certain paints and elastomers (such as neoprene and natural rubber) should be verified prior to use.
Features & Benefits
Low volatility ensures minimal evaporation in sealed instruments and electronics
Excellent protection against oxidation, corrosion and rust to extend component life
Exceptional low-temperature performance for reliable operation in cold environments
Extends maintenance intervals, reducing downtime and service costs
Anti-foaming properties provide smooth, consistent operation of instruments and mechanisms
Specifications
Part Number: 885-5GL
Manufacturer: Lanxess® (Royco® brand)
Container Size: 5 Gallon
Form: Liquid
Color: Amber
Base Fluid: Synthetic Ester (Diester)
Operating Temperature Range: -65°F to 300°F (-54°C to 149°C)
Military Specification: MIL-PRF-6085F
Boeing Specification: BMS 3-7
Flash Point: 441°F (227°C)
Kinematic Viscosity: 13 mm²/s at 40°C (104°F)
Applications: Aircraft instruments, air cycle equipment, bearings, and accessories requiring low-volatility, wide-temperature lubrication
Compatibility Note: May soften certain paints and elastomers; do not use with neoprene or natural rubber without testing
DISCLAIMER: Product information provided “as is.” Boeing may add, change, discontinue or remove this information at any time. Product photos may not be exact match to product delivered. Seeterms & conditions.
