Got something similar, I tested Teflon tape, it's actually dissolving, but I got (don't ask me where I got it from) thin paper tape, I do one layer over the threads, still gotta replace it every 3 or 4 times I open the lid - whatever, works so far for me. Just test some stuff, I'd recommend. Stay away from plastic tape, it could dissolve. Maybe a drop of oil on the threads? I'll try it, it came into my mind right now.