AF-E-411 MATERIAL
AF-E-411 MATERIAL
(OP)
Can someone tell me who manufactures AF-E-411 plastic?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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RE: AF-E-411 MATERIAL
Ah, yes. A quick Google search opens up PSI systems' website (they make prop tanks for the fluids you are probably interested in),
http://www.psi-pci.com/additional_facilities.htm
which lists AFE411 as a specialty compound. That'll be $5 for the search, or spot me a beer at the clubroom down the hall...
Just out of curiosity, what kind of rocket fuel are you trying to seal?
RE: AF-E-411 MATERIAL
RE: AF-E-411 MATERIAL
Thought so. Have you talked to the customer about using an EPDM compound? Unless you are sealing Aerozine-50, or one of the methyl hydrazines, EPDM seals quite nicely. There is a book out there called _Hydrazine and Its Derivatives_ by Eckhardt Schmidt, of the old Rocket Research Co. where I worked too many years. I think it was published by McGraw-Hill? The book is thick, but has a lot of good info. on hydrazine compatibility with various seal and container materials. Parker may also be able to point you to some of their proprietary blends. But, as I recall, good old Parker compund E515-80 was bulletproof as a hydrazine seal, at least for static seals.
Finally, if you are locked into the AFE411 due to spec. compliance, make sure the formulator is careful about the silicone/silica content. Depending on who this thruster valve is for it may or may not be important, AFE411 can put a lot of dissolved silicon/silicone into solution in the 'zine, which can go downstream and poison catalysts, or plug small fluid delivery tubes.
Wow, just checked amazon.com - $440! You may want to check with the librarian at RRC, now Aerojet, and see if they can loan you a copy.