On Fri, Aug 29, 2014 at 9:06 AM, Jerry Biehlerwrote: > 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? _______________________________________________ Hosted by the MEMS and Nanotechnology Exchange, the country's leading provider of MEMS and Nanotechnology design and fabrication services. Visit us at http://www.mems-exchange.org Want to advertise to this community? See http://www.memsnet.org To unsubscribe: http://mail.mems-exchange.org/mailman/listinfo/mems-talk