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Flex Seal

Flex Seal Flex Paste White, 1lb - Leak Repair Kit with Putty Knife Set + Daley Mint Cleaning Towel | Quickly Fills Cracks, Holes, Gaps

    • Based on 363 reviews
Condition: New
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$29.99 Why this price?

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Availability: Only 8 left in stock, order soon!
Fulfilled by Amazon
Arrives Friday, Dec 27
Order within 5 hours and 48 minutes
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Features

  • Receive 1, White Flex Paste (1lb) of rubberized paste that clings to almost any surface; Instantly fills large gaps, cracks, and holes around your home
  • Receive 1, Putty Knife Set (3 Pack); Set includes 1.5 inch, 2 inch, & 3 inch putty knives
  • Receive 1, Daley Mint cleaning towel to scrub excess paste from putty knives, clean spills, & wipe excess paste from surfaces
  • Flex Paste clings to a wide variety of surfaces, including: wood, glass, tile, metal, brick, masonry, concrete, aluminum, copper, fiberglass, porcelain, PVC, natural stone, roofing, and more
  • For indoor and outdoor use around your home, RV and motorhome; Repair concrete, boats and car maintenance, bathrooms and showers, and more

Description

FLEX SEAL WHITE FLEX PASTE, 1LBFlex Paste is a thick rubberized paste that clings to the surface and instantly seals large gaps, cracks and holes. Once dry, Flex Paste turns into a strong, flexible, watertight, rubberized coating that seals out air and water. This super thick sealant formula will not wash away, and will even cure underwater. Use Flex Paste to help prevent expensive damage from leaks. Perfect for all types of indoor and outdoor projects and repairs. Flex Paste is easy-to-use, making it a great option for crafts, hobbies, leaky pipes, gardeners, and all types of projects. It clings to a wide variety of surfaces, including PVC, glass, tile, concrete, drywall repair, metals, and more.3 PACK OF PUTTY KNIVESThe Putty Knife Set is perfect for scraping surfaces or spreading material. This set includes a 1-1/2 inch knife, a 2-inch knife and a 3-inch putty knife. Made of polypropylene material, these knives are strong enough to withstand everything your activities have to offer.BIG DALEY MINT BRANDED TOWEL (20" x 17")A cleaning towel to remove grease, oil, and dirt from the surface you're applying Flex Paste to. Also, use the towel to remove excess Flex Paste from your putty knives when you're finished. It's recommended NOT to use water to remove dried Flex Paste, instead, use the included towel. Simply machine wash to use again- and-again!Ready for faster and easier repairs!?


Brand: Flex Seal


Material: Pvc


Compatible Material: Porcelain, Wood, Brick, Glass, Plastic, Concrete, Metal, Stone


Item Form: Paste


Color: White


Package Dimensions ‏ : ‎ 11.89 x 9.13 x 4.06 inches; 1.32 Pounds


Date First Available ‏ : ‎ September 10, 2021


Manufacturer ‏ : ‎ Swift Response LLC


Best Sellers Rank: #15,164 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #59 in Putty Knives


#59 in Putty Knives:


Customer Reviews: 4.1 4.1 out of 5 stars 363 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Dec 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Versatile and just a wonderful product
we had a small leak from one of the joints underneath our kitchen sink. i'd tried everything else to stop it including the spray flex seal but nothing worked. we live too far out to call in a plumber for little things like that, a three hour round trip for our plumber so very costly. this paste was my final option and i crossed my fingers it'd work out. the paste has a rubber texture but is very easy to apply. i placed it all around the drain connection and allowed it a full day to dry. the next day we tested it and no more leak! it has been two weeks since that repair was made and still dry as a bone. i had some material left and wanted to make use of it. one of the kids years ago knocked a hole about baseball size in the closet wall. i thought it couldn't hurt to give this a try to repair that. i placed a drywall repair screen over the hole and then proceeded to apply this over the top of that. it was easy to smooth out with a plastic knife set. i let that dry a full day too. the end result was a perfectly flat, stable white surface. the paint i applied went on well, no problems at all. after all this time the hole between the attic and the closet is no more and looks as good as it did before. one thing to keep in mind is that once opened this material dries up and begins to harden very quickly. even though i sealed the tub almost immediately, when i opened it up again a few hours later i had a thick 'ring' of hardened rubber already forming around the inner sides. knowing that i would suggest to anyone using this to use it up quickly once opened. it's just the nature of the chemical mix that when open even if sealed well it isn't something that has much of a shelf life. this is extremely versatile material only limited in what you can do with it by your imagination so to speak. i am thrilled with the results i got and have ordered another tub to keep on hand for future use. i'd recommend this without reservations to anyone based on my experiences with it. ... show more
Reviewed in the United States on July 12, 2022 by MikenzCO
    • Buy the big 3lb tub
Unfortunately I bought the small 1lb tub that when opened it was already half solid. The lid, outer seal and inner seal were all intact, but the only useable product was the inner core. If you have a bigger area to fill, you might want to consider the bigger tub. It’s rather expensive, but seems to do the job. The product is good for holes and cracks in cement. I also like that it is paintable and used a light coat of grey spray paint to cover the stark white color. ... show more
Reviewed in the United States on April 20, 2023 by Connie J
    • Very expensive for what you get
This stuff works well, BUT unless you use the entire carton in one go, it dries up considerably, even if you follow the instructions of leaving in the metal lining and silica gel packet. For $30+ after tax, it is waaaaay too expensive for that. There are a ton of alternatives (pretty much any rubberized caulk) that cost far less and work just as well. ... show more
Reviewed in the United States on March 20, 2023 by Stacy L.
    • Top 1/3 of sealed tub already dry
Disappointed to spend this much money for sealant to discover the top 1/3 of this sealed tub was already set and unusable. Was on top of the rv sealing around the skylights and opened this sealed tub to find I had to peel out the top 1/3 of the tub because it was already set and useless.
Reviewed in the United States on August 7, 2023 by MnK
    • Flex Paste
I had a inch and a half opening from tub and siding I had put a filler then covered the gap with flex paste the results are amazing I am very pleased that my tub and wall are waterproof
Reviewed in the United States on April 24, 2023 by Joann DeMotto
    • how to apply it
If you follow the instructions it works perfectly
Reviewed in the United States on January 1, 2023 by Amazon Customer
    • Dried up after first use
Worked like a charm to repair plastic garbage can lid—great way to keep things out of the landfill. However, two weeks later I opened the can for another use (it was absolutely sealed tightly) and it was a combination of peanut butter and solid. Another time I’ll go with the spray can.
Reviewed in the United States on October 30, 2022 by Laurie A. Treacher
    • Half was dried up
The product worked great. But half was dried up when opening container. Not sure if the rest will have much shelf life. Used it on a indoor fountain.
Reviewed in the United States on June 7, 2022 by I like how it was

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