Flex Paste, Super Thick Rubber Spreadable Paste, Black 3 lb Tub

Flex Paste, Super Thick Rubber Spreadable Paste, Black 3 lb Tub
Model: US715BLK32
(669)
2 stores
1 Products

Product Details

Flex Paste is perfect for DIY, Handyman projects, arts & crafts, hobbies and so much more! Use it to repair your roof, winterize your home, plumbing repairs, to seal cracks, automotive or marine repairs, pool and spa repairs, and so much more. One pound of Flex Paste provides about 10 linear ft at 2 inches wide with a layer thickness of approx. 1/16th inch. Flex Paste can be used on windows, doors, vents, thresholds and so much more. It will create a watertight barrier that seals out air and moisture. Use Flex Paste to help prevent flood damage. It can even be used to fill large voids to help keep insects and rodents out of your home. Unlike spackle or joint compound, Flex Paste dries to a waterproof, flexible rubber. Therefore, sanding may not be the best option once Flex Paste has cured. Instead of sanding we recommend using a putty knife, trowel or similar tool to smooth over the surface of the Flex Paste to your desired finish. You can even add designs and patterns to Flex Paste to create your own unique artistic textures. Flex Paste can be applied on dry or wet surfaces and even underwater. It won’t dissolve or wash away and even dries underwater. For best results apply a generous amount to the surface using firm pressure. This will help push the water out and allow better contact to the surface during application. Etching the surface may help with adhesion on both wet and dry surfaces.

Flex Paste, Super Thick Rubber Spreadable Paste, Black 3 lb Tub 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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Last Updated: 2025-07-30 15:51:33

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Product Specifications

Technical Details

Manufacturer -
Brand Flex Seal
Item model number US715BLK32
Color Black
Weight -
Height -
Depth -

Additional Product Information

Product Id 1113403
User Reviews and Ratings
4.3 (669 ratings)
4.3 out of 5 stars
UPC 850017897205

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Flex Paste, Super Thick Rubber Spreadable Paste, Black 3 lb Tub
Reviews: 669
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Price:
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Top User Reviews and Ratings (10 total reviews)

(3)
Reviewed in the USA on Aug 09, 2023

This is a good product, however the containers which we were shipped were obviously old inventory. A large amount of the product was hardened to the point it was unusable, perhaps 25% of the container. Since it's an expensive product to purchase, this is a significant financial loss to the consumer. Once you open the container you must use all of its contents within a 48 hour period as it hardens relatively quickly when exposed to open air. Closing the container does not stop it from setting up and hardening once the inner seal is removed, it only slows the setup time.

Anonymous • Review provider: walmart.com
(5)
Reviewed in the USA on Oct 27, 2022

We purchased this product for some small leaky areas in our house. We had previously used the spray Flex Seal which worked great. However, there were a few areas that needed a long tip to fill in some gaps. Although our purchase had absolutely nothing to do with the Hurricane that was brewing, once we realized the storm would be here sooner than the product I drive around town until I found some to use immediately. We sealed everything we needed but unfortunately nothing could have stopped the force and duration of that storm. We did finally receive the product after the storm and we will definitely use it in the future to reseal all the problem areas once we rebuild that area. This is no reflection on the durability of your product, Mother Nature is just a beast!!!

Anonymous • Review provider: walmart.com
(3)
Reviewed in the USA on Oct 11, 2022

This is a great product..... however, only 3 Stars because I expect to get what I pay for! I purchased the 6 lb. tub, so I expected to get 6 lbs of usable product. But when I opened the container I found a dried ring approximately an inch and a half wide and deep around the top of the tub. I paid for 6 lbs but only received 5 lbs of usable product. This not the first time either. I have purchased a total of three of the 6 lb. tubs and three 1 lb. sizes over the last two years and ALL of them have the same issue. So, if you need the amount you paid for you will need to order and pay more or purchase another brand.

Anonymous • Review provider: walmart.com
(3)
Reviewed in the USA on May 22, 2022

So far I went through 3 tubs out of 4. In each tub, when I lifted out the foil "seal" there was a ring of dried and hardened paste all around the edge which I had to dig out. Seems like the seal did not seal very well,or the product sat around too long. Also I sure wish the paste was a little softer and easier to spread and work with.

Anonymous • Review provider: walmart.com
(4)
Reviewed in the USA on Jul 07, 2021

With care and skill you can make flex past spread for a durable thin seal. You don't get much for the price. My 1st pail arrived with the seal intact but last was dried solid nearly 3/4 through. Customer service did send me a replacement pail with in a few days. That pail was only 1/4 solid...in the end I was able to use one full pail of paste out of 2 orders

Anonymous • Review provider: walmart.com
Showing 1 to 5 of 10 reviews
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