[morzh]

I was about to write the same, my tubulars 630V fit inside without a problem. But I wanted to find my 90 restoration topic, and I could not find it.

One piece of advice: if potting the caps with hot glue, make some fishpaper tent(s) to cover the caps, and pot only the top of the tent and the leads. That will be enough, but hot glue might adversely affect the caps. Little quantities sipping through spaces in the tent will not do damage.