Am 20.08.2015 um 14:42 schrieb Robert Watzlavick:
I would love to use some hard or soft metal o-rings but I can't find
them anywhere in small quantities. I'm going to try using an AN901-6A
(aluminum crush washer) for my next LN2 cold test. A publication I
found specifically mentioned not to use them with boss ports but with my
dry testing, it looked good to me and it might good enough work for cryo
at low pressures. K-Seals would be ideal but I was unable to purchase
them in small quantities the last time I tried.