Flex Paste Industrial Sealant, Thick Rubber Coating, Black, 8.75 fl oz
Flex Paste Industrial Sealant, Thick Rubber Coating, Black, 8.75 fl oz
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Flex Paste Industrial Sealant, Thick Rubber Coating, Black, 8.75 fl oz

Flex Paste Industrial Sealant, Thick Rubber Coating, Black, 8.75 fl ozFlex Paste Industrial Sealant Thick Rubber Paste 8 75 fl oz BlackFlex Paste Super Thick Rubber Paste 1 lb ClearFlex Paste Super Thick Rubber Paste 8 75 fl oz White
Actual Color:Black

Key item features

  • Versatile Applications: This industrial sealant is ideal for a wide range of repairs, including foundation, concrete, roof, RV, motorhome, auto, and boat projects, as well as sealing out rodents and pests, and general indoor and outdoor use.
  • Durable Coating: Starting as a thick paste, it dries into a strong, flexible rubber coating that resists shrinking and washing away, and can be painted to match any color.
  • Extreme Adhesion: The sealant can be applied effectively on both dry and wet surfaces, including underwater, ensuring reliable performance in various conditions.
  • Broad Material Compatibility: It adheres to numerous materials such as wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fiberglass, ceramic, porcelain, natural stones, and various roofing and synthetic materials.
  • Product Specifications: Available in black, this 8.75 fl oz sealant measures 3 x 3.4 x 4.7 inches and weighs 1 pound, offered in both tubs and cartridges.
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Columbus, 43215
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4.03125 stars out of 5, based on 32 seller reviews(4.0)
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Customer ratings & reviews

4.1 out of 5 stars
stars1,342 ratings834 reviews
How item rating is calculated
  1. 5 stars64% (853)
  2. 4 stars12% (157)
  3. 3 stars7% (97)
  4. 2 stars4% (56)
  5. 1 star13% (179)

Reviews summary

Pros

  • : Forms a strong coating that seals out air, water, and moisture.
  • : Fills large gaps with a strong, flexible seal.
  • : Application process is straightforward and effortless.
  • : Forms a secure barrier to prevent liquid escape.

Neutral

  • : Can be a great value, but also feels overpriced to some.
  • : Can be easy to use and resealable, but also prone to damage or drying out.
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Showing 1-3 of 834 reviews

Jun 24, 2025
Barb
Top Reviewer
Item details
Color: Black
5 out of 5 stars review

Verified Purchase

Flex Paste Black Industrial Sealant 8.75 oz can

Had to let it dry a few days on a pipe leaking around the T off in the basement. A plumber told me I would have to spend big $$ to repair the cracked T-Pipe that runs through and up the sewer pipe to the roof. I had another plumber tell me this was so small to just patch it with this stuff and let it dry 48 hours no more leaking in the basement when the toilet and sink are used. It works well. No more leaking, or spending a grand replacing PVC pipes or cutting out dining room wall to run new pipe to the roof. And there is plenty left to do other repairs. Just make sure to put the lid back on with a rubber mallet so the paste does not dry out. Well worth the money I spent. Great Product.

Helpful?40Z3T6QHW6C0669440906
Apr 4, 2026
kandy
Top Reviewer
Item details
Color: Clear
5 out of 5 stars review

Verified Purchase

Great product, Dries to a rubber hold and clear,

Great product. It needs to come with something or tool to spread it with. But the product itself works really well.. It dries to a rubber base when dry.. Does seem to keep water out once it is dried. I used it on a water pipe that had a leak and it seems to be working well. I would definitely recommend.

Helpful?40Z3T6QHW6C0669440906
Sep 1, 2025
George
Top Reviewer
Item details
Color: Clear
5 out of 5 stars review

Verified Purchase

Easy To Put On And Hold Shape

I found it very easy to spread using a putty knife. It spreads and fills in holes nicely. I recommend waiting 48 hours for it to cure as my application was outside.

Helpful?40Z3T6QHW6C0669440906