I have a keezer that has recently had a moisture problem. I have let it dry out, but there is a decent amount of rust that I need to clean up on the inside. My current plan is to take some steel wool and clean as much of the rust as possible and then put some sort of anti-rust protective coating over top of the places that I clean before painting everything (the inside of the keezer). Does anyone have suggestions on a particular anti-rust product? Additionally, I was looking at paints and saw some recommendations for exterior primer paint. I was curious if this would work for the inside of the keezer or if there were any recommendations for a different type of paint? Lastly, both my aluminum CO2 tank and my steel nitrogen tank have some rust on the bottom of them from the moisture that was in the keezer. Would just putting some anti-rust coating over the rust be sufficient to solve this problem or are other actions necessary? Thanks in advance.
a little rust never hurt anything. but I like your idea about cleaning and sealing the inside. not sure if it would work perfectly but I don't see how it could hurt. there is a galvanized primer available. it is a spray paint. I have used this stuff on the interior of 55 gallon drums used for environmental remediation systems. it does work. http://www.essentialhardware.com/ru..._source=Bing&utm_medium=cpc&utm_campaign=Bing a top coat of krylon clear coat might help to form an oxygen impermeable barrier, but that part I doubt. and spray paint is not very durable. but its worth a try. personally I just live with it and scrub with a green sponge every so often. as for the tanks, if you want to paint them go ahead. I can't see any reason it is needed, but sure, why not.
My life is a constant battle of corrosion control . . . not sure I'm winning but I'm never giving up. My 2ยข: I sanded, treated, and re-painted the outside of my keezer and the inside of the lid. Sanding; start with something like 80 grit and graduate to 200 grit. Once as much rust is removed as possible you want to treat; I use Ospho. It will definitely stop the rust it comes in contact with, trouble is there is always a sliver of the nasty orange stuff that remains and grows. This doesn't permanently solve the problem but gives you a short term tactical advantage. Be sure to drop the liner for the lid and inspect behind the insulation . . . a favorite hiding place for the rusties. Painting; you really want to prime with an oil-based primer. The idea is to seal the metal from the ever present moisture. Then a color coat with is also oil based (I like the Rustoleum products). These oil based paints are more difficult to work with but will outlast a water based paint. Your aluminum tank has no rust, pretty sure this is some form of oxidation and/or nasty sludge ( a form of enemy disinformation). Try cleaning with strong scrubbie. If you really want to slow the corrosion you can treat with NoALox (no aluminum oxide). I've had only fair success with this. I would not paint the alum tank. Painting your steel tank will have no effect other than short-term cosmetic . . . the rust will continue to be in place, spread, and will bleed through the paint. I would treat same as the steel keezer; sand, ospho, prime, paint. Again, you will probably never make it go away and stay away. Some good/bad new here. These steel tanks have a massive bottom and for the rust to go deep enough to cause a problem is not likely. It will not pass its next hydro, will be failed on inspection. If your steel hydro date is soon I would do nothing, maybe fill it before expiration to get maximum use. If you have the long skinny tank they can be cut down to make a respectable cannon barrel, the short squaty ones make excellent bells. Such is the graveyard of steel tanks . . . You do know you can only paint a keezer when it's not running and will stay off until the paint is dry (even the exterior). Depending on your local humidity it may take up to 48 hours for each coat to cure. It's a harsh battlefield.
