AeroShell Grease 33 MIL-PRF-23827C

AeroShell Grease 33

is a synthetic universal airframe grease made of lithium complex thickened synthetic base oil, with corrosion and oxidation inhibitors, and load-carrying additives. The useful operating temperature range is ?73?C to +121?C.

Main Applications:

• For many years aircraft operators have been seeking to rationalise the greases used on aircraft and to reduce the number of different greases in their inventories. Recently Boeing began research on a new, general purpose, corrosion inhibiting grease. The aim was for a non-clay based grease that would provide longer life for components and mechanisms and possess improved wear and corrosion resistance. This led to the introduction of the new Boeing Specification BMS 3-33B.
• Technicians use various types of grease with specific properties for routine lubrication due to the wide range of operating temperatures, loads, and environmental conditions required for different aircraft components. In developing their BMS 3-33B specification, Boeing considered the properties of different grease types used on aircraft and designed a specification for a grease that would provide improved performance and cover the widest possible range of applications.
• AeroShell Grease 33 meets the BMS 3-33B specification and delivers the enhanced performance required. You can use AeroShell Grease 33 for routine lubrication on Boeing aircraft where MIL-PRF-23827C or BMS 3-24 is specified. Additionally, AeroShell Grease 33 is suitable for some applications on Boeing aircraft that require MIL-G-21164. Boeing is currently reviewing other applications that require MIL-G-21164 and other greases, and they will issue details of the full range of applications in due course. For the most current information, refer to the latest issue of the Boeing Service Letter “BMS 3-33B General Purpose Aircraft Grease.”
• AeroShell Grease 33 is also suitable for routine lubrication where MIL-PRF-23827C is specified. This includes aircraft by McDonnell Douglas, Airbus, BAe Regional Aircraft, Canadair, Lockheed, Embraer, Fokker, and Gulfstream. However, it should not be used for wheel bearings, applications above 121°C, or sliding applications requiring molybdenum disulfide.
• Other aircraft manufacturers are evaluating AeroShell Grease 33 with the aim of approving it for use on their aircraft. Operators should regularly check with these manufacturers for the latest status.

Uses:

• Use of AeroShell Grease 33 can provide operators with the following benefits:

1. Reduced inventories;
2. Reduced maintenance labour costs;
3. Less chance of product mis-application.