Selection of agitator seal

[86782522]

Hi all,

I am working with an extremely aggresive chemical in a G/L reactor above 100C. Now I have problem selecting a suitable agitator seal. We have tested almost all fluoroelastomers like Kalrez, Chemraz etc. used in mechanical seals. Vapors of this chemical attacks all of these elastomers.

I am wondering what are my options now. Can you suggest me any other elastomer that I should try? Also do you know if it is possible to use mag drive agitator (w/ vendor info), which doesn't have any elastomer? What other options I can use like gas seal or a seal with gas purge etc? Let me know if you have experience with any of these alternatives or if you have any other suggestions.

Thanks in advance for your help and time.

 

[gr2vessels]

Labyrinth sealing? Liquid seal (if low vapour pressure)? No seal with nitrogen(?) pressurized chamber around the support and bearing system? Yes, continuous purge with vapour collection chamber, etc... Combinations of the above? Mag drives have limited torque..Any pressure in your vessel? Is there consensation issue? Are you currently venting the vapours or incinerate them? I believe that you need a serious engineering help, rather than "off shelf" ideas from this forum...
cheers,
gr2vessels