Flex Paste, Cartridge, Black, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs
Condition: New
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Friday, Sep 19
Recently Viewed
Color: Black
Size: No Size
Features
- NEW! STAY FRESH CONTAINER Blocks out air and locks in freshness to extend the sealing power of Flex Paste, with no waste
- COAT, SEAL & PROTECT - Penetrates deep to seal out air, water, and moisture. Once dry, it turns into a strong, flexible, watertight, rubberized barrier
- WORKS UNDERWATER - Can be applied underwater, and it even dries underwater
- FILLS LARGE AREAS - Super thick rubber paste clings to the surface and instantly fills large gaps, cracks, and holes
- FULLY PAINTABLE - Once fully cured, it can be painted any color. Helps prevent rust and corrosion, and it is UV resistant
Color: Black
Brand: Flex Paste
Item Weight: 9 Ounces
Liquid Volume: 9 Fluid Ounces
Full Cure Time: 48 Hours
Product Dimensions : 1.57 x 1.57 x 5.91 inches; 9 ounces
Item model number : FLEX SEAL - PFSBLKR10 - BLACK
Department : Unisex-Adult
Date First Available : February 14, 2020
Manufacturer : Swift Response, LLC
Country of Origin : USA
Best Sellers Rank: #4,504 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #7 in Hardware Sealers
#7 in Hardware Sealers:
Customer Reviews: 4.0 4.0 out of 5 stars 2,785 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Sep 19
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Color: White
Size: No Size
i had a shower pan that was cracked when i bought the product 9 years ago. i had a little water always in one corner where the floor rotten out years ago. i used the tape and paste, then and now and it is drying and i will use the spray can of almond and it will be good to go until i can afford to tear it all out, but this product is so good. im not in any hurry to spend 500 plus dollars yet... 15 saves me 500 for now...
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Reviewed in the United States on September 6, 2024 by dowghouse
Color: White
Size: No Size
Unfortunately, upon opening the plastic container, only half was usable as the outer sides of the container were hard and unusable. So, As much as I Love this product,, because of the price, and I only could use half of my purchase , I will not buy again.
Reviewed in the United States on February 5, 2024 by Donna Duhe
Color: Black
Size: No Size
If you believe in leprechauns, then you'll believe Flex Paste works on wet surfaces. But let's be real—leprechauns aren't sealing your roof leaks. Despite its mythical claims about underwater usage, this stuff is fantastic for sealing large gaps and cracks (on dry land). I used Flex Paste as a pond liner seam seal after properly prepping, cleaning, and drying the area. Once it was ready, this magical black goo did an incredible job! No more leaks, and my pond is now a happy home for my fishy friends. Just don't try to use it underwater unless you're looking to meet some imaginary creatures. For dry surface fixes, Flex Paste is your go-to hero! For wet surfaces, stick to fairy tales.
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Reviewed in the United States on August 1, 2024 by Jay
Color: White
Size: No Size
UPDATE - I have been monitoring the pipe for the last few days. While I initially thought the paste was going to provide the fix I needed, that "thought" would be incorrect. The water started leaking again. Be smart/save your money and do not buy this stuff. I'm going back to what I should have done to start with - turn off the water and replace the pipe. This Flex Paste is JUNK!!!! Had a very small leak at the base of this water faucet (small droplets of water on the PVC surface). Based on the advertisement I thought the paste would be the perfect fix. I followed the directions as stated on the container. After apply a good initial coat, I still had the small leak. The next day, I applied another coat - still had the leak. The next day, after turning off the water to everything, I applied another coat heavy/massive amount of paste using both a putty knife and my hand. Left the water off for 1 to 2 hours and the leak appears to have stopped (after using most of the paste). What a pain!!! While using the paste, I was diligent in keeping the lid on the paste. At the end of each day, I would use a rubber mallet to hammer the lid on. Regardless of the tight seal, the paste still hardened. Probably would have been easier to just replace the bad piece of PVC that was leaking.
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Reviewed in the United States on October 28, 2024 by Carroll S Carroll S
Color: White
Size: 9 Ounces
I have used Flex Seal paste in household projects over the past few years and had extreme success. Over the past month I removed cleaned and reseated 14 Portlights, and 4 Deck hatches on my sailboat. I have full confidence that this will last long into the future. The price was a 50% of the previous 3m products I have used in the past. It may be over kill but I used 12 tubes for my project. I used the RYOBI battery powered caulking gun, which made it very easy and controllable. I then used my fingertip (rubber gloves) for smoothing. I continually sprayed my gloved fingertip with alcohol and smoothed to a perfect finish. NOTE: I took the above pictures before trimming and smoothing the Flex Paste.
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Reviewed in the United States on October 4, 2024 by CaptJ CaptJ
Color: White
Size: No Size
I'd have returned this product if time had allowed. The top 1" was rock hard and completely dried out. I had to break through the top layer to get to usable product. It did stop the leak. I'd have given 5 stars if 1/4 of the product wasn't dried out.
Reviewed in the United States on September 18, 2024 by Albacore Shuffle
Color: Black
Size: No Size
A battery operated caulking gun is a must.
Reviewed in the United States on January 9, 2025 by Eric S. Summerlin
Color: White
Size: No Size
Fixed our tub from leaking until we can get new one
Reviewed in the United States on December 18, 2024 by Edward moore