Corroseal-82320 Water-Based Rust Converter Metal Primer, Rust Converter - 1 Qt

I have used another product for a number of years dealing with rust as it occurs on a Freighliner chassis and tow gear and things. I've been surprised at how well it has worked. This product claims to convert rust in the same way but is water based instead of oil based. was a little skeptical about this being a water based product but read some reviews by professional restoration types on other websites that sounded excellent so gave it a try. First, water cleanup is definitely a welcome change. As to the product, the reviews of its long term effectiveness were good. I have no reason to doubt them but haven't used it long enough to confirm them, I have used it in a number of places over the past couple of months and been pleased with the result whether significant preparation was needed on heavy rust or just normal maintenance on light rust as it begins to occur. Follow the directions, including the additional coats indicated by the colors it presents as it dries and I think you will like the results. It will dry to a durable deep black finish somewhere between gloss and semi-gloss. It serves as a primer for paint at that point although the finish looks nice enough, even when applied with a brush ,that the only reason I think I'll paint is to make the adjacent surfaces look as nice as this turns out. I'm even considering just using this although it would make for an expensive paint where rust treatment isn't required. I did some black enameled panels where there was rust I brushed out in a few place and no rust in other places. I coated the whole panel and it looks nice and uniform in the previously rusted areas as well as the rest of the panel. I will definitely be purchasing more of this.

This product does exactly as described. Covers old rusty parts well. Very easy to use and leaves a strong durable coating after application. Highly recommend. Great for lots of uses in the garage.

great product, works well

This is pretty good. I had to put some on a cancerous part of my Jeep where the rear wheel well meets the frame. It is a milky-white color, and is a little more viscous than milk itself - think buttermilk. It goes on easy enough, but it is runny and won't stay put if layered in any sort of thickness. Don't put it in a cheap dollar-store spray bottle unless you want it everywhere, get something better. But understand that you won't be storing it in that spray bottle because this stuff dries up like lacquer and will freeze and clog the sprayer - hence my use of the dollar-store variety. On second thought I should have used a sponge-tip paintbrush applicator, that would work perfect for this. It works great once on the part, I first took a hammer to knock off the gobs of rust flaking off to get to a solid surface. It started to turn black after 5 minutes, and only got darker. 15 mins in it was pretty much done, and starting to dry. I let it dry overnight and it formed a good coating that should survive this winter, until I can get under there to repair it properly.

It's just TOO EASY! Paints on like buttermilk, turns to black (magnetite) on rusty areas, dries almost clear elsewhere. No fumes, no complicated process, just remove loose rust, paint on with a foam or bristle chip brush (I've even used a pump sprayer) let it dry for an hour (max) and then paint -- or NOT. The black magnetite coating is quite rugged all by itself.

Let me first start off with I am not technical--I am a homeowner who wants to maintain my home. I noticed that a filter device on my AC unit was showing substantial rust. I called the AC company that maintains the AC units (you would think they would have spotted this but that is another story) and it would be $250 for the part and labor. After some research and advice from my father in law who is a mechanical engineer and a rocket scientist, i chose to buy Corroseal based on other people's reviews and a need for a true rust converter. I followed the directions to a tee--first bought a dollar store set of wire brushes to scrape away any loose rust and paint and then lightly sanded with some medium sand paper. Then I waited for early afternoon to apply Corroseal--it is thicker than water but not sludge like thick. I applied it with a dollar store paint brush which I threw away after using. I did shake it up and then pour it into a plastic cup and applied it to the filter. It went on perfectly --any excess just dripped right into the ground. It adhered to the filter without a problem including underneath it. I let it dry 3 days--instructions say 24 hours but I wanted to make sure. it was completely dry. As you can see in picture 2 that it dried to a black purple which according to the website is the correct color when it works. I applied it to the entire filter unit including areas that were painted as well as the rusted areas. After 3 days of drying (we had rain one day but the Corroseal once applied stayed on with no problem) I applied Rustoleum Rust Preventer as a top coat. Just sprayed it on and let it dry (3rd picture). Looks good now and I think this should save the filter for the time being--if I can get another couple of years out of it or more it is well worth what I paid for Corroseal plus the brushes--(I had the rustoleum from another project and the sand paper as well). I think my total investment was less than $25. Really impressed so far --it is doing the job and hopefully has saved me from an expensive AC repair. For any questions I went to the Corroseal website and it provided very good info.

Great stuff. Kills rust on steel.

Exactly as described. The rust is gone and a hard, tuff surface is left. Sometimes auto body rust pits need treated. Not bad enough to replace the metal, but the rust must be stopped. This does just that. Stops the rust and allows repairs with body filler. A must have for auto resoration.