Outer Tub Repair Substance?

There are also other products you might try. I've had good luck with Jasco Rust converter on old cars etc. Basically it's a phosphoric acid/chromate liquid that converts the rust to iron phosphate. I am currently trying it out on an older Whirlpool outer tub; I'll see how well it works. It appears to etch/haze the porcelain glass surface slightly, but it doesn't destroy it completely. AFter it dries overnight, you're supposed to brush off any white powder and then primer over it. Any oil based primer will do at that point. You don't want to get the Jasco on good paint; it can eat the paint down to the bare metal (depending on the type of paint, it seems). You probably also should wear gloves, although for small jobs I've gotten by without gloves.

I've also had good luck with Rustoleum oil-based Red Primer - it has a lot of fish oil in it, which penetrates the rust, and is very resistant to further rusting. However it's best if this oily primer is left to age or weather for some time before top-coating, because if there is excess oil on its surface it can inhibit adhesion of a top coat.

If it were my tub, I'd treat the rust spots with Jasco and then give them a brush coat of Rustoleum red primer. Since the tub will never be seen again in normal use, I wouldn't bother top coating it, although a coat of oil-based black enamel probably wouldn't hurt, and would look better to a service person... lol...


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Post# 186459 1/27/2007 at 16:59 (6,296 days old) by pturo (Syracuse, New York)
Checkrate/Likes IIRC, a few months back, there was a restoration by a member who had a leaky outer tub and there was a rather noisome but effective substance that many claimed worked great. I have the entire cabinet off a Maytag A107 and have it tilted on it's side and there are two pencil eraser head size rust spots on the outer, outer tub bottom where it looks like the gray paint or porcelin had chipped off. I wanted to nip this in the bud, so no rust through issues occur in the future. What was the substance and what are the caveats with it's use? Thanks Philip

Post# 186461 , Reply# 1 1/27/2007 at 17:22 (6,296 days old) by gyrafoam (Wytheville, VA)
Checkrate/Likes POR-15 is the "magic bullet". It is available on their own web site, or you can usually get a can at an auto body-shop supply store. For just a small area as you have described, I think I would just get some "Rust-Oleum" type spray rust inhibitor and spray the area real well. You can get a can of that stuff at Lowe's or Home Depot.

Post# 186484 , Reply# 2 1/27/2007 at 18:15 (6,296 days old) by sudsmaster (SF Bay Area, California)
Checkrate/Likes There are also other products you might try. I've had good luck with Jasco Rust converter on old cars etc. Basically it's a phosphoric acid/chromate liquid that converts the rust to iron phosphate. I am currently trying it out on an older Whirlpool outer tub; I'll see how well it works. It appears to etch/haze the porcelain glass surface slightly, but it doesn't destroy it completely. AFter it dries overnight, you're supposed to brush off any white powder and then primer over it. Any oil based primer will do at that point. You don't want to get the Jasco on good paint; it can eat the paint down to the bare metal (depending on the type of paint, it seems). You probably also should wear gloves, although for small jobs I've gotten by without gloves. I've also had good luck with Rustoleum oil-based Red Primer - it has a lot of fish oil in it, which penetrates the rust, and is very resistant to further rusting. However it's best if this oily primer is left to age or weather for some time before top-coating, because if there is excess oil on its surface it can inhibit adhesion of a top coat. If it were my tub, I'd treat the rust spots with Jasco and then give them a brush coat of Rustoleum red primer. Since the tub will never be seen again in normal use, I wouldn't bother top coating it, although a coat of oil-based black enamel probably wouldn't hurt, and would look better to a service person... lol...

Post# 186596 , Reply# 3 1/28/2007 at 01:04 (6,295 days old) by pturo (Syracuse, New York)
Checkrate/Likes 1 Gyrafoam, you are probably more than right. It is small, and just to keep it from growing, a can of Rustolem will probably do to treat these small spots. There is not a leak, just a breach of whatever coating that was on there that the bare metal started to rust over in it's protective absence. I admit to being a litte paranoid obsessive on leaky issues, and would probably order any and all products, with backups, to help solve the actual and percieved future problem. Thanks