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Rust-Oleum Stops Rust

Model # 265494

Internet # 203165631

Store SKU # 663930

12 oz. LeakSeal Black Spray

This item has been discontinued.
The Home Depot no longer carries this specific product.

$9.46 /each




Model # 265494

Internet # 203165631

Store SKU # 663930

Rust-Oleum LeakSeal Black Spray is an easy to use, rubberized protective utility coating designed to fill and seal leaks and cracks. It provides a water-tight, flexible seal that prevents moisture penetration, rust and corrosion. LeakSeal dries to a semi-smooth, firm finish that will not sag or drip and can be top-coated with latex or oil based paints.

California residents: see  Proposition 65 information

  • A durable, rubberized utility coating designed to fill and seal leaks and cracks
  • Easy to use, limited overspray, multi-surface/multi-purpose use, for use on metal, aluminum, galvanized metal, PVC, concrete, masonry, asphalt roofing materials, vinyl siding, fiberglass and more
  • Dry time to the touch in approximately 2 hours and cures after 24 hours
  • 12 oz. can provides coverage is can be up to 10 sq. ft. depending on the surface porosity
  • Flat/matte finish will not reflect light
  • Rust and moisture resistant applies for superior protection from leaks and cracks
  • Withstands extreme temperatures and climates
  • Provides ultimate UV protection
  • Prevents water and moisture penetration for ultimate protection
  • Note: product may vary by store

Info & Guides

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Container Size 
12 OZ-Ounce 
Coverage Area (sq. ft.) 
Coating Product Category 
Dry to touch (min.) 
Paint Product Type 
Patching and Repair Product 
Paint/Stain Clean Up 
Mineral Spirits 
Paint/Stain Key Features 
No additional features 
Tint Base 
Base 1 


Rated 3.1 out of 5 by 32 reviewers.
Rated 3.0 out of 5.0 by WORKED ONCE, BUT NOT TWICE I used a can of Rusoleum Leakseal on the inside of two rain barrels to fill small cracks. I put eight coats on each crack, starting out with small spray amounts. It worked to stop the leak in one rain barrel, but it did not stop the leak in the second rain barrel. I used about a third of a can on the inside of each rain barrel, spraying it in timed intervals throughout the day. I was disappointed that it did not repair the crack in the second rain barrel. I may have been applying it on the wrong type of plastic. I plan to scrape it off of the bottom of the rain barrel, and use plastic roof cement (tar) to repair the crack. September 15, 2015
Rated 1.0 out of 5.0 by over priced and not worth the time i ordered this product as i thought it would help stop a small drip that i had from my gutter, no such luck, it kept allowing water thru and eventually peeled right off, even after following the instructions. it is a big disappointment as Rustoleum i thought, was an exce ptional product and a trusted name . i would advise just using silicone liquid or adhesive to stop seam leaks, anything would work better than this... March 24, 2015
Rated 5.0 out of 5.0 by Better than Flex Seal! Months ago, I saw Flex Seal on TV, and gave it a try around some flashing on my roof. The spray pattern was nothing like what was on TV. It was all over the place and made a mess. I saw Rust-Oleum's product this past weekend and decided to give it a shot. Wow! What a difference! It works as advertised and I know it will be backed by the Rust-Oleum name. The odor is a little strong, but for what the product is (spray rubber?), it is not that bad. March 23, 2012
Rated 5.0 out of 5.0 by Great stuff Had a roof flashing leak. Cleaned up the area, but on several coats and brushed smooth to make sure it got in the cracks...... just bought some more to do another area that is leaking... will see next big storm. I am sure it will hold. September 15, 2012
Rated 4.0 out of 5.0 by Worked fine Let me start by saying I discoverd a leak in my roof during a very heavy storm, the water wasn't pouring in but was a very steady drip in a few different places. It was wet and dripping when I sprayed it on and it worked! i was very surprised that it stopped the steady drips, I put 2 coats so far and have a second can to do another couple of coats until I can have it repaired correctly. I would like to addI have used Rustoleum products in the past and have never been disappointed. December 9, 2014
Rated 5.0 out of 5.0 by rustoleum spray I got this a few weeks ago but use it for past few years . It also comes in clear and white . It is a very good product and great for protecting metal or wood from damage from being or close to ground . I spray a pipe coming out of ground with it about 3 years ago and has shown no disbanding from the pipe. April 8, 2015
Rated 3.0 out of 5.0 by Great product..... not enough This is a great product for every day fixes... but the contents of the can run out to fast for the price. February 18, 2014
Rated 2.0 out of 5.0 by Not enough in the can... I like this product, but I barely covered a four square foot area with only one coat. The old wall behind the washer has lots of cracks and is drafty. This can ran out FAST! Less than a minute of spraying time. For the price I paid, I can't justify buying it again, because there is not much in there. AND it has a massive odor! It is very strong. Make sure you have a fan handy and open your windows. But, it looks good and feels good when dry. It appears to work at keeping the drafts out. It would have been cheaper and cleaner to re-drywall the same area. I gave it a fair rating because I am sure it works excellent for what it was designed to do, but the volume and cost make this only 2 stars. February 27, 2012
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