I’ve tried PTFE tubing and viton tubing. Both are rated for ocer 200c but both have failed me in different ways. With the PTFE I have to use chemglass high temp gl 18s and they always start to leak after a while. I have the Beaker and wrench high temp gl 18s but I can’t get them to seal with hard PTFE tubing. So I decided to try viton because some people recommend it… it fits on my high temp gl 18s from beaker and wrench but it melted 2 times in 1 run at 155c (its rated for way over this)
Anyone have any suggestions?
Second time today lol