Model # 265494

Internet #203165631

Store SKU #663930

Rust-Oleum Stops Rust 12 oz. LeakSeal Black Spray
0020066218744

Rust-Oleum Stops Rust

12 oz. LeakSeal Black Spray

  • Provides firm but flexible protection in areas that need it most
  • Forms a paintable finish that seals cracks and fills small holes
  • Great for gutters, roofs, flashing, ductwork and much more
$946 /each

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Product Overview

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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Customer Questions & Answers

Can this leakseal be used on/around roof flashing?

Asked by: theoldgizzer
yes it definitely can.
Answered by: Hicmaster
Date published: 2016-12-02

Can this product seal a fine line crack in a poured concrete foundation from water getting thru?

Can this product seal a fine line crack in a poured concrete foundation from water getting thru?
Asked by: BOBO
Happy to help! Rust-Oleum Stops Rust LeakSeal Spray is suitable for use on concrete surfaces. Please keep in mind that this product is not designed to provide reinforcement as a concrete patch would provide.
Answered by: Rust-OleumSupport
Date published: 2017-04-18

Can this product be applied when the temperature is below 32 degrees?

Can this product be applied when the temperature is below 32 degrees?
Asked by: Charles
I bet you can, as the leak seal developers claim it can withstand low temperatures. Maybe it will take longer to dry. ( It a woman's, mine, opinion LOL)
Answered by: Lara
Date published: 2017-01-31

Can this be used to seal ABS drain pipe?

Asked by: Blmar10s
Rust-Oleum LeakSeal Flexible Rubberized Coating is not recommended to be used on ABS plastics or synthetic rubber. These two substrates have been proven to be extremely difficult to properly accept coatings.
Answered by: Rust-OleumSupport
Date published: 2016-12-23
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Customer Reviews

12 oz. LeakSeal Black Spray is rated 3.4 out of 5 by 59.
Rated 3 out of 5 by from For some reason, I presumed that this product would perform as well as the "Flex Seal" spray. Wro... For some reason, I presumed that this product would perform as well as the "Flex Seal" spray. Wrong! I used my Flex Seal even when I thought the can was spent 10x over, still a bit more came out. Don't make the same mistake I did and cut your project in half at the half- can used point or your project may not finish, like mine. With the can and nozzle restricting flow of the last quarter of product, I realize all, of the interior cosmetic work I did was in vain. One- forth of my roof flashing at chimney will leak again tomorrow in the rain storm. What a waste of time and money. I am a 53 yr old woman, not happy to climb onto my roof in the first place. Product failure. I will never buy this product again.
Date published: 2017-03-20
Rated 1 out of 5 by from This sucks this is a terrible product, nozzle gets clogged within seconds This sucks this is a terrible product, nozzle gets clogged within seconds
Date published: 2017-03-23
Rated 5 out of 5 by from Pretty Weather Protection I utilized this product to spray metal for extra protection from the elements. Being printable, I then spray painted the metal for color. So far, so good.
Date published: 2016-12-29
Rated 5 out of 5 by from 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.
Date published: 2012-03-23
Rated 5 out of 5 by from This stuff ROCKS!!!! I am very pleased with the durability and how its sticks to everything you u... This stuff ROCKS!!!! I am very pleased with the durability and how its sticks to everything you use it on. I used it for my car and sprayed it on over Bondo, Fiberglass and rust spots it fill all little imperfections and dries smooth and looks great. I recommend it for use on what ever you need to seal. I do suggest that it should come in other custom colors on the shelf.
Date published: 2016-12-02
Rated 5 out of 5 by from Worked fine. Plashed a little while spraying. 12oz is a little small amount. You go through a can... Worked fine. Plashed a little while spraying. 12oz is a little small amount. You go through a can rather fast. I used it to reseal around flashings on roof where vents come through. Easier than using a bucket or can of tar.
Date published: 2016-10-25
Rated 5 out of 5 by from Outstanding Product Had a small leak under my bathroom sink. With one quick coat the leak was no more! That was two weeks and still holding strong.
Date published: 2016-09-25
Rated 1 out of 5 by from 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...
Date published: 2015-03-24
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