seal material for argon flow

[vscid]

If I am flowing Argon inside my solenoid valve, would I be needing Viton seals? Would Buna N work?
Thanks!

 

[btrueblood]

Buna N should work fine. SBR ("Buna") rubber maybe a little more leak-tight. The only reason to use Viton is if you think your Argon is corrosive, which is unlikely since it's one of the noble gases, and hence very very un-reactive chemically.

 

[tom1953]

FYI, there are a couple of online chemical resistance tables I use frequently that may be of use for questions such as these:

http://www.efunda.com/DesignStandards/oring/oring_chemical.cfm

http://www.afmusa.com/orings.chem.comp.asp

Regards,

Tom Jablonowski, TSE Industries, Inc.

http://www.tse-industries.com

 

[flexibox]

You should consider the pressures! I assume they are low because if you are operating at high pressures you may experience explosive decompression.

trust this helps.