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AeroShell Grease 7 satisfies nearly all the airframe grease requirements of turbine engine aircraft and also those of piston-engined aircraft provided that seal incompatibility does not occur. Most civil aircraft manufacturers approve AeroShell Grease 7 as a general-purpose grease either by brand name or by specification. It is recommended for lubricating highly loaded gears, actuator screw mechanisms, etc., also for instrument and general airframe lubrication within the temperature range of – 73°C to +121°C (–99°F to 250°F). AeroShell Grease 7 contains synthetic ester oil and should not be used in contact with incompatible seal materials.
AeroShell Grease 7 is a clay-based grease approved to MIL-PRF-23827C Type II; it should not be mixed with soap-based greases approved to MIL-PRF-23827C Type I.
| General Information | |
|---|---|
| Part # | 550066860-14.1OZ |
| Manufacturer | AeroShell |
| Shipping Information | |
|---|---|
| Product Weight | 0.97 lbs. |
| Product Dimensions | 10 x 2 x 2 in. |
| Schedule B | 3403990000 |
| ECCN | EAR99 |
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AIRCRAFT COMPATIBILITY
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QUESTIONS & ANSWERS
AeroShell Grease 7 is a premium synthetic aircraft grease engineered for dependable performance across a wide temperature range. Formulated with a synthetic ester base oil and a clay thickener, it delivers strong load-carrying capability, excellent water resistance, and long-lasting corrosion protection for critical aviation components.
AeroShell Grease 7 is designed specifically to meet the demanding lubrication requirements of both piston and turbine aircraft. Its synthetic formulation remains stable under extreme operating conditions, providing reliable protection in high-load and high-temperature environments. The Microgel thickener system further enhances oxidation resistance and maintains a consistent texture and performance throughout the service life.
This grease is widely applied in actuator screw drives, precision instrument bearings, high-load gear mechanisms, and general airframe lubrication points. Many major aircraft manufacturers, including popular general aviation brands, approve its use by specification or name, reflecting its compatibility with a range of critical assemblies.
AeroShell 7 provides reliable lubrication from approximately -99°F to 250°F (-73°C to 121°C). Its ability to perform in both extreme cold and high-heat environments makes it ideal for aircraft operating across diverse climates and altitudes.
While AeroShell Grease 7 can be used in certain wheel bearing scenarios, it is not the preferred option for heavy-duty bearings that are exposed to moisture, runway contaminants, or deicing fluids. Products such as AeroShell Grease 22 or AeroShell Grease 33 are generally recommended for wheel bearing environments that demand enhanced water resistance and load capacity.
Its excellent low-temperature characteristics allow it to remain workable and fluid even at extremely low temperatures. With very low starting torque at -99°F (-73°C), the grease supports smooth motion in components that would otherwise stiffen in cold climates.
AeroShell 7 maintains structural integrity and lubrication effectiveness at temperatures up to 250°F (121°C). Testing shows minimal oil evaporation and strong resistance to oxidation, ensuring reliable performance under sustained heat and mechanical stress.
The grease features a synthetic ester base oil combined with a clay-based thickener. This non-melting thickener provides exceptional thermal stability, making the grease effective in high-temperature and high-speed operating conditions.
No. AeroShell 7 should not be mixed with soap-thickened greases or MIL-PRF-23827C Type I products. Mixing incompatible greases can cause texture breakdown, reduced protection, or oil separation. When transitioning to AeroShell 7, thoroughly remove the old grease to ensure optimal performance.
Yes. Lab testing demonstrates excellent oxidation stability, showing a minimal pressure drop after extended high-temperature exposure. It also meets industry standards for rust prevention, providing reliable corrosion protection for steel and other metals commonly used in aircraft.
AeroShell 7 offers robust water resistance, maintaining its structure and adhesion even in the presence of moisture or during washing conditions. Low loss in water washout testing indicates that the grease remains in place during rain, humidity, and routine aircraft cleaning.
The grease meets MIL-PRF-23827C (Type II) and COMAC QPL-CMS-OL-302 performance standards. These approvals confirm its suitability for use across a wide range of commercial, regional, and military aircraft platforms.
Yes. AeroShell 7 meets nearly all lubrication requirements for turbine aircraft and many piston aircraft applications, assuming seal materials are compatible with synthetic ester oils. Always consult the aircraft maintenance manual to confirm suitability.
AeroShell Grease 7 is generally considered a low-risk product when used properly, but it may cause mild skin or eye irritation. Wear gloves, avoid prolonged contact, and wash thoroughly after use. Dispose of used grease through approved waste-handling facilities.
