AeroShell Grease 33MS
Although Boeing’s aim in developing BMS 3-33 was to have a single grease that could be used in the majority of airframe applications where several different greases were previously used, there remain a small number of heavily-loaded, sliding applications, where the additional boost of MoS2 will always be required. It was a logical decision, therefore, to formulate an EP version of ASG 33 to address this continuing need. This product is ASG 33MS and is approved to both MIL-G-21164D and DEF STAN 91-57 specifications. As with the ASG 7/ASG 17 combination, ASG 33MS is simply ASG 33 with 5% added MoS2. ASG 33MS also benefits from the exceptional anti-corrosion and anti-wear properties of ASG 33.
|AeroShell Grease 7||Clay - MicrogelÒ||MIL-PRF-23827C (Type II)|
|AeroShell Grease 17||AeroShell Grease 7 with 5% MoS2||Clay - MicrogelÒ||MIL-G-21164D|
|AeroShell Grease 33||Lithium-complex||MIL-PRF-23827C (Type I)|
|AeroShell Grease 33MS||AeroShell Grease 33 with 5% MoS2||Lithium-complex||MIL-G-21164D|
Why discontinue AeroShell Grease 17?
Because the number of airframe applications requiring MoS2-containing greases is small, compared with those lubricated by general purpose airframe grease, it follows that the volume of ASG 17 manufactured is small compared with other greases in the AeroShell range. This volume is expected to get even smaller as ASG 33MS replaces ASG 17 in airline service. Just as ASG 33 has replaced ASG 7 and other MIL-PRF-23827C (and some MIL-PRF-81322F) greases, as it benefits have been recognised by the aircraft operators, so we would expect ASG 33MS to replace ASG 17 and other MIL-G-21164D greases as its superior performance and complete compatibility with ASG 33 is recognised.
In the interests of manufacturing efficiency, therefore, it does not make sense to make ASG 33MS in addition to a shrinking volume of ASG 17; consequently, the decision has been made to phase out ASG 17 in favour of ASG 33MS. Production of ASG 17 will cease by mid 2005. A stockpile will be laid down so that we can continue to supply customers and allow a managed transition from ASG 17 to ASG 33MS. It is anticipated that toward the end of 2006, ASG 17 will be no longer available.
Note that, because of its large volume and much wider range of application, there are no immediate planes to phase out ASG 7.
AeroShell Grease 7 is an advanced multi-purpose grease,
composed of a synthetic oil thickened with Microgel®, possessing
good load carrying ability over a wide temperature range. It is
inhibited against corrosion and has excellent resistance to water.
The useful operating temperature range is –73°C to +149°C.
OUR BEST OFFER!