Flex Seal MAX Aerosol Liquid Rubber Sealant Coating, 17 oz, Clear
Flex Seal MAX Aerosol Liquid Rubber Sealant Coating, 17 oz, Clear
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Flex Seal MAX Aerosol Liquid Rubber Sealant Coating, 17 oz, Clear

4.6 stars out of 902 reviews
(4.6)|
902 ratings

Key item features

  • Easy Application: Easy to use with simple spray application; just shake well and spray 8 to 12 inches from the surface.
  • Long-Lasting Flexibility: Stays flexible and seals out water for years, providing a durable, watertight seal.
  • Versatile Use: Works on wood, metal, concrete, glass, plastic, and more, making it suitable for various repair needs.
  • Multiple Applications: Ideal for fixing leaky roofs, gutters, downspouts, RVs, campers, mobile homes, skylights, and vent pipes.
  • Maximum Coverage: Covers up to 20% more than the original size, offering maximum sealing power and economical use.
  • Clear Finish: Dries to a clear, rubberized coating that can be painted any color, blending seamlessly with any surface.
  • Handyman in a Can: Acts as liquid rubber in a can, seeping into cracks and holes to stop leaks fast and protect surfaces.
  • Application Tips: For best results, apply multiple coats, ensure the surface is clean, and use at temperatures above 60°F.
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Current price is $16.87
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Butte, 59701
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Customer ratings & reviews

4.6 out of 5 stars
stars902 ratings701 reviews
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Reviews summary

Pros
  • : Process is straightforward and fast.
  • : Provides even, watertight surface coating.
  • : Forms a waterproof barrier to prevent water entry.
  • : Forms seal in cracks and holes.
  • : Forms a watertight seal to stop leaks quickly.
Neutral
  • : Can be straightforward for simple issues, but complex problems may be challenging.
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Showing 1-3 of 701 reviews

Nov 12, 2025
Denise
Top Reviewer
Item details
Color: Clear
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Worked Great !

This sealing product worked great on our gutters. After they were installed we had two leaks, so I thought this might work, it works in their commercials. It did ! It was terrific, and easy to use. I wiped the areas, shake the can, spray the area that leaked, and spots were seams. I spayed evenly as it made a wide surface spray. No more leaks !

Helpful?5GN5P7B28805326014275
Jan 31, 2025
WalmartCustomer
Item details
Color: Black
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I havent had the product long enough to really see any negatives, so far its doing what its supposed to. Had to rate quality yet, but it came in a generous size. Price was competative with other sellers, and i didnt have to buy two cans at once. Only complaint was the delivery fee which raised the price by another 3rd.

Incentivized Review
Helpful?5GN5P7B28805326014275
Jul 4, 2025
Robert
Top Reviewer
Walmart Associate
Item details
Color: White
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Buying again

I first bought this in black and had excellent results. I'm using this for vinyl window casings outside that have cracked and to "patch over" previous screw holes in my vinyl siding. It blends in nicely and seals up great.

Helpful?5GN5P7B28805326014275