Buy AeroShell Grease 33
Withdrawal of AeroShell Grease 16
AeroShell Grease 16 is a multi-purpose grease comprised of a mixed synthetic/mineral base oil, Microgel® clay thickener and performance enhancing additives.
AeroShell Grease 16 was developed originally in 1962 to meet the US military specification MIL-G-25760 for “Grease, Aircraft, Ball & Roller Bearing, Wide Temperature Range”. This specification was withdrawn by the US military in 1968 and replaced by MIL-G- 81322 (now MIL-PRF-81322G) for “Grease, Aircraft, General Purpose, Wide Temperature Range”. Although Shell developed AeroShell Grease 22 to meet this replacement specification, it continued to supply AeroShell Grease 16 to satisfy the demands of the Boeing BMS 3-24 specification.
Reason for Withdrawal
With the original applications for AeroShell Grease 16 being increasingly met by other, more modern, greases such as AeroShell Grease 33, the production volumes have progressively fallen to a level at which continued production can no longer be economically justified. Consequently, production of AeroShell Grease 16 will cease in October 2005 but with enough grease stockpiled to meet demand until the end of 2006, which should give consumers enough time to determine the most suitable replacement for their application.
Proposed Alternative Greases
Deciding which AeroShell grease is the most suitable to replace AeroShell Grease 16 will depend largely on the operational temperature range of the application.
|AeroShell Grease 16||BMS 3-24A||-54°C to +177°C|
|AeroShell Grease 22||MIL-PRF-81322G||-54°C to +177°C|
|AeroShell Grease 33||BMS 3-33A; SAE AMS 3052; MIL-PRF-23827C (Type I)||-73°C to +121°C|
For low temperature range applications, AeroShell Grease 33 is the preferred choice. Following the development of the BMS 3-33 specification, Boeing has recommended replacing AeroShell Grease 16 with AeroShell Grease 33 in all the low temperature range applications where AeroShell Grease 16 was previously specified. This change confers the added advantage of the improved anti-corrosion and anti-wear properties of AeroShell Grease 33.
Where a higher operating temperature applies, then AeroShell Grease 22 is the logical choice.
Depending on the application, other greases in the AeroShell range may be preferable; full details on these can be found in the AeroShell Book, available in paper form or on-line at www.shell.com/aviation.
Advice on Changing Greases
Certain precautions should be taken when changing grease types to avoid the possibility of incompatibility. This is particularly important when changing from one grease type to another; for example AeroShell Grease 16 is a clay-based grease whereas AeroShell Grease 33 is a lithium complex grease. Advice on this subject is provided in the Shell Aviation Briefing Note “Compatibility and Intermixing of Greases”.
Download MSDS AeroShell Grease 33
HIGH PERFORMANCE GREASES AND HYDRAULIC FLUIDS
BMS 3-33 Approved
Left Flap Work and Aileron Installation
AeroShell Products Packaging
Withdrawal of AeroShell Grease 16
What Are They And How Do They Differ?
Boeing 737 - AeroShell Grease 33
Aerosol Grease D-5933NS
AEROSHELL Grease 33 is our newest generation multi-purpose synthetic grease. It is specifically designed to lubricate a wide range of applications and operating conditions on commercial aircraft. It is approved for Boeing’s BMS 3-33 specification and it covers the operating temperature range between –73 °C and +121 °C.
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