Aeroshell Grease 33 - 17kg MIL-PRF-23827C Type I DEF STAN 91-53

With corrosion and oxidation inhibitors AeroShell Grease 33 lubricates all but 9 of 359 grease application points on a Boeing 737! Grease 33 is a universal airframe grease composed of a lithium complex thickened synthetic base oil.

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 3-33. The useful operating temperature range is -73°C to +121°C. Owing to the wide range of operating temperatures, loads and other environmental conditions required for various aircraft components, several different types of grease with different desirable properties are used during routine lubrication of aircraft components. Boeing, in developing their BMS 3-33 specification, took account of the properties of the different grease types used on aircraft and wrote a specification for a grease which would provide improved performance and which could be used in the widest possible range of grease applications.

AeroShell Grease 33 Specifications:

• U.S. Approved MIL-PRF-23827C (Type I )
• NATO Code G-354
• Boeing Approved BMS 3-33A