Aeroshell Fluid 12

AeroShell Fluid 12 is a low volatility synthetic ester oil used in aircraft instruments and for the general lubrication of aircraft. It is oxidation and corrosion inhibited and has good high and low temperature characteristics. Besides general aircraft lubrication, it is used for aircraft gyro instrument gimbal bearings, separately lubricated high speed turbines and compressors, aircraft air cycle equipment and electronic equipment where low evaporation at high and low temperatures is required. As a synthetic oil it should not contact incompatible seal materials such as neoprene and fluorocarbon (Viton), and it may affect certain paints and plastics.

Specifications

• Approved MIL-PRF-6085D; equivalent DEF STAN 91-49; approved AIR 3511/A
• NATO code O-147; Joint Service Designation OX-14; approved to COMAC QPL-CMS-OL-204

Typical Properties

• Kinematic viscosity 8.2 mm²/s at 54.4 °C, 11,000 mm²/s at −53.9 °C
• Flash point (Cleveland open cup) 220 °C; pour point below −60 °C
• Total acid number 0.20 mgKOH/g; relative density (15.6 °C) 0.925
• Passes corrosion-oxidation stability test, 168 hours at 135 °C