What would be a good sealant for a glass tank designed to hold isopropyl alcohol?

Hello,

I am a student working on a permanent diffusion cloud chamber. I have everything working so far except for the type of sealant. The chamber is filled with 99%+ isopropyl alcohol vapor which has started corroding my acrylic tank and adhesive over the course of a few weeks.
I’m planning to switch to a glass tank but have not been able to source a good sealant that would be resistant to the alcohol over long term exposure. There seems to be mixed opinions about the combination of silicone and isopropyl and so far I have found no data covering long exposure periods.

Does anyone have any suggestions on something that might work for this?

thanks
-b