If you are trying to get to 10^-8 right now forget the stopper. It is never going to happen with a seal like that. How many connections do you need? What kind of pump are you using to get that low? What kind of chamber?
-Jerry > On Aug 29, 2014, at 12:45 PM, Nathan McCorkle <[email protected]> wrote: > >> On Fri, Aug 29, 2014 at 9:06 AM, Jerry Biehler <[email protected]> >> wrote: >> Ahh, I see why viton now. Viton and nitrile are pretty interchangeable for >> vacuum systems. They both have their advantages and disadvantages. Viton is >> more chemical resistant but it also holds water and out gasses longer than >> nitrile. Almost all of the electrometric seals in my system are nitrile and >> I can get down to 10^-8 torr without much problem. > > Cool, good to know, I guess I want a nitrile stopper then! That is > something I didn't search for at all... I wonder what NASA has to say > about them (though of course they're probably swinging the temp in > their walk-in space simulator chambers since space is cold). > > >> How low are you trying to go? > > 10^-8 is where the instrument hovers I believe. > >> >> This is my little system at home: http://flic.kr/p/kaT8XR > > Sweet! For imaging? > _______________________________________________ > dorkbotpdx-blabber mailing list > [email protected] > http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber _______________________________________________ dorkbotpdx-blabber mailing list [email protected] http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
