Flex Seal Paste, Super Thick Rubber Spreadable Paste, White 9oz Cartridge Sealants
Flex Seal Paste, Super Thick Rubber Spreadable Paste, White 9oz Cartridge Sealants
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Flex Seal Paste, Super Thick Rubber Spreadable Paste, White 9oz Cartridge Sealants

4.3 stars out of 645 reviews
(4.3)|
645 ratings

Key item features

  • Thick rubberized paste that you can spread, shape, form and seal virtually everything
  • Dries into a strong, flexible rubber that expands and contracts with the surfaces
  • Can be applied on dry or wet surfaces, even underwater
  • Will not shrink, crack or peel and once cured, it can be painted any color
  • Works on wood, glass, tile, concrete, metal, brick, and so much more
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Starting from $27.94

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Comparison Chart:
Industrial sealant typeRubber EpoxyFlex Seal Paste, Super Thick Rubber Spreadable Paste, White 9oz Cartridge SealantsPasteFlex Seal Flood Protection Paste Cartridge, 9 oz, Yellow-Flex Paste Super Thick Rubber Paste, 9 oz, BlackRubberized PasteFlex Seal Family of Products 6084315 9 oz Rubberized Paste, Clear - Pack of 4CaulkFlex Glue Strong Rubberized Waterproof Adhesive Pro Formula, 28 oz Caulk Gun Cartridge, WhiteFlex PasteFlex Paste PFSWHTR10 As Seen on TV Super Thick Rubber Paste, 9 Oz, Each
Rec. useWindowFlex Seal Paste, Super Thick Rubber Spreadable Paste, White 9oz Cartridge SealantsWindowFlex Seal Flood Protection Paste Cartridge, 9 oz, Yellow-Flex Paste Super Thick Rubber Paste, 9 oz, Black-Flex Seal Family of Products 6084315 9 oz Rubberized Paste, Clear - Pack of 4CommercialFlex Glue Strong Rubberized Waterproof Adhesive Pro Formula, 28 oz Caulk Gun Cartridge, WhiteFill GapsFlex Paste PFSWHTR10 As Seen on TV Super Thick Rubber Paste, 9 Oz, Each
Recommended surfaceMulti-SurfaceFlex Seal Paste, Super Thick Rubber Spreadable Paste, White 9oz Cartridge SealantsMulti-SurfaceFlex Seal Flood Protection Paste Cartridge, 9 oz, YellowTileFlex Paste Super Thick Rubber Paste, 9 oz, Black-Flex Seal Family of Products 6084315 9 oz Rubberized Paste, Clear - Pack of 4Multi-SurfaceFlex Glue Strong Rubberized Waterproof Adhesive Pro Formula, 28 oz Caulk Gun Cartridge, White-Flex Paste PFSWHTR10 As Seen on TV Super Thick Rubber Paste, 9 Oz, Each
Dry time1 hFlex Seal Paste, Super Thick Rubber Spreadable Paste, White 9oz Cartridge Sealants-Flex Seal Flood Protection Paste Cartridge, 9 oz, Yellow24 hFlex Paste Super Thick Rubber Paste, 9 oz, Black24 hFlex Seal Family of Products 6084315 9 oz Rubberized Paste, Clear - Pack of 424.0hFlex Glue Strong Rubberized Waterproof Adhesive Pro Formula, 28 oz Caulk Gun Cartridge, White-Flex Paste PFSWHTR10 As Seen on TV Super Thick Rubber Paste, 9 Oz, Each
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4.3 out of 5 stars
stars645 ratings501 reviews
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Showing 1-3 of 501 reviews

Aug 13, 2025
ann
Top Reviewer
Item details
Color: White
Size: 9 oz
Sold and shipped byMax Warehouse
5 out of 5 stars review

Verified Purchase

it works. cracjs don't come back

Helpful?4NHKHVDYGBFD344809366
Jun 23, 2021
Maggie D
5 out of 5 stars review

Seller Verified Purchase

Buy from Mfg for fresh product and low price

I purchased the flex paste to close open ends in my deck railing which is 1 1/2" pipe. your product was fresh and I used a butter knife to do the job. I was able to clean the knife and my hands afterward ...it worked perfectly and I still have some I am saving for any leaks that should arise.

Review from flexsealproducts.com
Helpful?4NHKHVDYGBFD344809366
reply from Supplier Response

Hi there, thank you so much for sharing your awesome experience with us! We're so happy to hear the Flex Paste was the perfect solution for your deck railing repair. If you ever need help with a future project or repair, you can email us at Humans@FlexSealProducts.com. Have a Flextastic day!

May 10, 2020
RedDog
5 out of 5 stars review

Seller Verified Purchase

Flex Paste - Fixes Shower Tub/Leak

We've had an on-going problem with our 20 year old fiberglass/gelcoat shower/tub. The leak started as a small hairline crack in the bottom and has grown to 2-3". Over the last 3 years I've patched it twice with the Gelcoat Repair Kits which last a while, but begin leaking again. I did some research and decided to give Flex Paste a try. I covered the leaking area with Flex Paste and have been leak free for a couple of weeks. It seems like a solid repair and we'll see how long it lasts. I like that I can spread the Flex Paste well beyond the crack.

Review from flexsealproducts.com
Helpful?4NHKHVDYGBFD344809366