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Historically, aircraft maintenance operations had to carry several different greases for different lubrication needs. But then Shell developed AeroShell Grease 33 - a universal airframe grease. AeroShell Grease 33 is effective on virtually all airframe components. For those components where AeroShell Grease 33 is not suitable, AeroShell 22 will do the job. A complete grease range in two products.
Why use AeroShell Grease 33?
Replacing the number of greases used on the aircraft with a common grease prevents misapplication of the wrong grease and damage to the aircraft
The much improved corrosion resistance and wear protection properties of ASG 33 help prevent expensive replacement of parts whilst also allowing lubrication intervals to be extended
Replacing a range of greases with just one, reduces stock inventory and cost.
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.
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.
Shell worked closely with Boeing during the development of BMS 3-33 and formulated AeroShell Grease 33 to meet the improved performance properties required by this specification. It was the first, and for several years the only, grease approved to BMS 3-33. AeroShell Grease 33 is also approved to the MIL-PRF-23827C specification.
AeroShell Grease 33 can be used for routine lubrication on Boeing aircraft for applications where MIL-PRF-23827C or BMS 3-24 is specified. AeroShell Grease 33 can also be used in some applications on Boeing aircraft which require use of MIL-G-21164D. Other applications on Boeing aircraft which require use of MIL-G-21164D and some other greases are being reviewed and in due course Boeing will issue details of the full range of applications.
AeroShell Grease 33 can be used for routine lubrication in applications where MIL-PRF-23827C is specified on aircraft manufactured by McDonnell Douglas, Airbus Industrie, BAe Regional Aircraft, Fokker and Gulfstream (except for wheel bearings, applications above 121°C and sliding applications requiring molybdenum disulphide).
Other aircraft manufacturers, such as Canadair, Saab and Lockheed 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.
The following pictures illustrate the superior load-carrying and anti-corrosion properties of AeroShell Grease 33 (green) when compared with a competitive grease meeting the MIL-PRF-81322F specification (red):
The Frekote 770-NC synthetic mold release I ordered has a 6-month shelf life from the factory. The can I received on 8/25 was set to expire on 8/31 according to the date printed on the bottom of the can. I called and sent a photo of the can bottom and they said it should have been taken off the shelf a month earlier, so they will send me a good can when new stock arrives without sending the out of date can back.
I appreciate the fast delivery and them taking care of the issue, but it means you could be buying product that has only one month of shelf life remaining. Call before you buy and have them confirm the expiration date of their stock and if it is less than works for you, work out delivery from fresh stock or negotiate a discount.
