AeroShell Grease 7

AeroShell Grease 7 is a high-performance synthetic aircraft grease formulated for wide-temperature operation. Using a synthetic ester base oil and clay thickener, it provides superior load-carrying ability, water resistance, and corrosion protection across a broad range of aviation applications.

This multipurpose grease is engineered for both turbine and piston-engine aircraft, offering excellent lubrication in high-load and high-temperature conditions. Its synthetic base ensures stability and protection under varying flight environments, while its Microgel® technology enhances oxidation resistance and consistency.

It is commonly used for actuator screw mechanisms, instrument bearings, highly loaded gears, and general airframe lubrication. Most civil aircraft manufacturers, including Cessna and Piper, approve AeroShell 7 either by specification or brand name for these critical components.

AeroShell Grease 7 operates effectively between -99°F and 250°F (-73°C to 121°C), making it suitable for both high-altitude and ground-based aircraft operations. Its performance in extreme cold and hot environments ensures consistent lubrication across climates.

While AeroShell 7 can handle some wheel bearing applications, it’s not the primary recommendation for heavy-load areas exposed to water or deicing fluids. Greases like AeroShell 22 or AeroShell 33 provide additives better suited for those conditions.

It maintains outstanding performance even at -99°F (-73°C), with low start-up torque of only 0.23 Nm at that temperature. This ensures smooth operation in cold-weather and high-altitude conditions where other greases may thicken excessively.

AeroShell 7 remains stable up to 250°F (121°C) and maintains lubrication integrity without excessive oil separation or oxidation, as demonstrated by a low 1.3% evaporation loss after 22 hours at 100°C.

It contains a synthetic ester base oil and a clay thickener. This non-melting composition ensures thermal stability and reliable protection in high-speed or high-temperature conditions.

It should not be mixed with soap-based greases, including MIL-PRF-23827C Type I formulations. Mixing greases with different thickeners can lead to softening, oil separation, or reduced protection. Always clean old grease thoroughly before switching to a new one.

Yes. Its oxidation pressure drop after 100 hours at 99°C is only 17 kPa – well below the 70 kPa limit – demonstrating excellent long-term stability. It also passes ASTM D1743 rust prevention testing, confirming strong corrosion protection for aircraft metals.

AeroShell 7 exhibits excellent water resistance, with only 6% loss during ASTM D1264 testing at 38°C. This ensures it stays in place even when exposed to rain, humidity, or washing conditions common in aviation environments.

It meets MIL-PRF-23827C (Type II) and COMAC QPL-CMS-OL-302 standards, confirming its suitability for civil and commercial aircraft applications. These certifications attest to its reliability in both turbine and piston-engine aircraft systems.

Yes. It satisfies nearly all airframe grease requirements for turbine-engined aircraft and most piston-engine aircraft, provided there are no seal material incompatibilities. Always verify compatibility with the aircraft’s maintenance manual before application.

When handled properly, AeroShell 7 poses minimal health risks. Avoid skin contact. Wear protective gloves and wash your hands with soap and water after handling. Dispose of used grease responsibly through authorized collection points.