I Need Your Help

My beer freezer has some rust on the inside, where the walls meet at the corners. I'm going to remove it with naval jelly. Since this appears to be a spot where rust likes to attack, I plan to seal the corners permanently.

Caulk and silicone fall apart eventually. I was thinking I would get myself some sort of metal-impregnated epoxy like Devcon or Marine Tex and run a bead of it down each corner. I want something really tough, really permanent, and totally waterproof.

Your thoughts?

Also, should I prime it after removing the rust?

I'm really annoyed about this. I got the converted-freezer idea from fellow beer nerds, but none of them mentioned rust.

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Thanks for all the suggestions.

I decided to go with truck liner spray. I considered the Liquid Rubber, but I don't know how well it stands up to a beating.

I'm going to get rid of the rust, scuff up the interior of the cooler, and cut loose with the spray. I figure it will be hard for the rust to continue with a coating of vinyl glommed directly onto it.

Problem: the only color I could find was black. I can order white, but it will take days, and I need to get this mess fixed.

I also bought Great Stuff to fill the voids under the tap towers so humidity won't creep in as easily.

I plan to fill the drain hole from the inside of the freezer. Not sure what to use. I don't think it really matters. Hell, I guess spackle would do it. I'm going to paint over it anyway. It just has to be something dry and hard.

I don't look forward to having a freezer with a black interior. Maybe at some point in the future I could blast it with a coat of the white stuff.