Wait, why are Viton not ok for UHV? Viton KF seals are used everywhere for UHV (... | Hacker News

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syntaxing on May 30, 2021 | parent | context | favorite | on: “Faraday Wax” – recreating old school high-vacuum ...

Wait, why are Viton not ok for UHV? Viton KF seals are used everywhere for UHV (maybe not to the -12 but -10 is definitely achievable).

avsteele on May 31, 2021 [–]

Viton leaks water.

The only way I can see getting to -10's with Viton seals is having a tiny small amount or a huge pump.

syntaxing on May 31, 2021 | [–]

Understandable why this is a issue for a homelab but most industrial UHV chamber have cryo for this reason.

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