Shell AeroShell Fluid 61
Shell AeroShell Fluid 61 is a synthetic hydrocarbon-based aircraft hydraulic fluid specifically inhibited to provide excellent oxidation stability for the oil and strong corrosion preventive protection to hydraulic systems. It is designed for applications where a fire-resistant preservative grade hydraulic fluid is required and is suitable for both operational service and the preservation of components during storage and shipment.
The fluid operates effectively within a temperature range of –40°C to +200°C, maintaining stable viscosity characteristics at both low and elevated temperatures. It offers a high flash and fire point, supporting enhanced safety margins in demanding aerospace environments. Strong low-temperature fluidity ensures dependable hydraulic response in cold conditions, while good thermal and oxidation stability helps protect system components during extended high-temperature operation.
Shell AeroShell Fluid 61 provides effective anti-wear protection, corrosion resistance and controlled evaporation loss, contributing to extended component life and reliable system performance. It demonstrates strong cleanliness and particulate control characteristics and passes stringent corrosion and oxidation stability testing. Additional properties include controlled water content, good foaming characteristics and effective rust prevention performance, helping maintain hydraulic system integrity over time.
The product meets MIL-PRF-46170E Type I and carries NATO Code H-544. Under previous US specification revisions, Type I is undyed while Type II is dyed red for aerospace use; Shell AeroShell Fluid 61 (NA) is the undyed Type I grade.
Shell AeroShell Fluid 61 is compatible with AeroShell Fluids 4, 31, 41 and 71, offering flexibility for mixed or transitional hydraulic systems. As a synthetic hydrocarbon oil, it should not be used in contact with incompatible seal materials. Chlorinated solvents must not be used for cleaning hydraulic components used with this fluid, as residual solvent contamination may lead to corrosion.
Designed for modern aerospace hydraulic systems requiring fire-resistant preservative-grade fluids, Shell AeroShell Fluid 61 supports reliable operation, extended component life and safe handling when used as recommended.
