I have a rusty compressor tank (30 gallon) that still holds air, but the bottom inside looks pretty weathered.

I was thinking of cleaning as best as I can and using some kind of tank sealant to protect the inside. Like POR or something recommended for fuel tanks.

A very important reason for doing this would be to 'raise' the profile around the water drain so that water can get out.


Is this futile?

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