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AF-E-411 MATERIAL
- Thread starter cbert
- Start date
btrueblood
Mechanical
Oy. Haven't heard of that stuff for quite awhile. I think you can get it from Parker, and maybe Apple Rubber, contact their custom compounding shops. You could also contact EG&G Wright Components, I used to buy a solenoid valve from them with an AFE-411 seat; they may be able to point you towards a supplier. Moog also supplies similar stuff, and probably mixes their own rubber.
Ah, yes. A quick Google search opens up PSI systems' website (they make prop tanks for the fluids you are probably interested in),
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?
Ah, yes. A quick Google search opens up PSI systems' website (they make prop tanks for the fluids you are probably interested in),
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?
- Thread starter
- #3
btrueblood
Mechanical
Sip...ahh!
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.
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.
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