AeroShell Fluid 41 (MIL-PRF-5606J)

AeroShell Fluid 41 is a mineral hydraulic oil manufactured to a very high level of cleanliness, and possesses improved fluid properties. AeroShell Fluid 41 contains additives which provide good low temperature fluidity, anti-wear, oxidation-corrosion inhibition and shear stability. In addition metal de-activators and foam inhibitors are included in this high viscosity index fluid to enhance performance in hydraulic applications. AeroShell Fluid 41 is capable of wide temperature range operation.

AeroShell Fluid 41 is dyed red.

FEATURES AND BENEFITS

Redorange

Manufactured to an extremely high level of cleanliness.

Enhanced Additives

Contains anti-wear agents, oxidation-corrosion inhibitors, metal deactivators, and foam inhibitors.

High Viscosity Index

Ensures consistent performance in varying temperatures, ensuring reliability under harsh conditions.

Versatile Compatibility

Compatible with AeroShell Fluids 4, 31, 61, and LGF

Low temperature fluidity

System efficiency through low-temperature performance

Reduced Maintenance Costs

High cleanliness and stability reduce the need for frequent fluid changes.

Specifications & Approvals

Technical information
Application method
Dispense system, Manual
Applications

Bonding close fitting parts, Repairing

Fixture time, Steel
5.0 sec.
Key characteristics
General purpose, Strength: high strength, Viscosity: low viscosity, fixture: very fast fixture
Operating temperature
-40.0 – 120.0 °C (-40.0 – 250.0 °F )
Viscosity
100.0 mPa·s (cP)
Recommended for use with
Elastomer, Metal, Plastic, Porous surface

Applications

  • Aircraft Systems: Recommended for all modern aircraft requiring a mineral hydraulic fluid – commonly in landing gear hydraulic systems. 

  • Operates in unpressurized systems (-54°C to 90°C) and pressurized systems (-54°C to 135°C).

  • Synthetic Rubber Components: Designed for use in systems with synthetic rubber but not compatible with natural rubber.

  • Industrial Use: Applicable in certain industrial hydraulic systems due to its versatile properties.

     

Caution: Avoid using chlorinated solvents for cleaning components, as residual solvents can contaminate the fluid and lead to corrosion.

Data Sheets

Too See AeroShell Fluid 41 technical data sheet (TDS) and the AeroShell Fluid 41 safety data sheet (SDS). Visit here 

Frequently Asked Questions

What is AeroShell Fluid 41 and where is it used?

AeroShell Fluid 41 is a mineral-based hydraulic fluid designed for modern aircraft systems requiring high levels of cleanliness. It is used in landing gear shock struts, hydraulic flight control systems, and brake systems where MIL-PRF-5606 specifications are mandated.

"Super Clean" indicates that the fluid has been filtered to meet stringent particulate contamination limits. This is essential for the reliable operation of high-pressure hydraulic components, preventing valve sticking and premature wear in precision-engineered aircraft systems.

AeroShell Fluid 41 is qualified to the MIL-PRF-5606J (or latest revision) specification. It is identified by the NATO code H-515 and is compatible with other mineral-based fluids meeting the same military standards.

The fluid is dyed red for easy identification and leak detection. Since it must never be mixed with synthetic (Skydrol) or turbine oils, the distinct red color helps maintenance technicians quickly verify the fluid type and locate the source of any hydraulic system leaks.

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