AeroShell Fluid 31 (MIL-PRF-83282D) is a synthetic, fire-resistant hydraulic fluid designed for aircraft applications. It is formulated using a synthetic hydrocarbon base stock, providing excellent low-temperature fluidity, high thermal stability, and superior oxidation resistance. This fluid is commonly used in aircraft systems where extreme environmental conditions and high-performance demands are critical.
Reduced flammability for enhanced safety in aircraft systems.
Functions effectively in extreme cold and hot conditions.
Remains fluid and operational in temperatures as low as -40°C.
Resists thermal breakdown even under prolonged exposure to high temperatures.
Extends the service life of the fluid, reducing maintenance.
Compatible with most seals, gaskets, and elastomeric materials used in aviation
| Country | Specification |
|---|---|
|
United States |
MIL-PRF-83282D
|
|
French |
DCSEA 437/B
|
|
NATO Code |
H-537
|
|
Joint Service Designation |
OX-19 |
Temperature Range: Recommended for systems operating between –40°C to +205°C (–40°F to +401°F).
Recommended Uses Suitable for auto pilots, shock absorbers, brakes, flight control systems, and hydraulic servo-controlled systems.
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AeroShell Fluid 31 is a synthetic hydrocarbon hydraulic fluid formulated with a high flash point (typically above 200°C). Unlike traditional mineral oils, it is specifically designed to be fire-resistant, significantly reducing the risk of fire in the event of a hydraulic leak near hot engine parts or braking systems.
AeroShell Fluid 31 is qualified to the MIL-PRF-83282D (latest revision) specification. It is also designated by the NATO code H-537, making it the standard synthetic hydraulic fluid for many modern military aircraft and land-based weapon systems.
Yes, AeroShell Fluid 31 is compatible and miscible with mineral-based fluids like AeroShell Fluid 41 (MIL-PRF-5606). However, mixing them will lower the flash point of Fluid 31 and reduce its fire-resistant properties. For maximum safety, it is recommended to keep the systems separate.
It is used in aircraft hydraulic systems, landing gear struts, and brake systems that operate in high-risk areas. It is particularly valued in military aviation and high-performance civil aircraft where enhanced fire protection and low-temperature fluidity (down to -40°C) are required.
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