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4.3
(652)
4.3 out of 5 stars. 652 reviews
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  11. Flex Seal Flex Paste MAX 12 lb. Black All Purpose Strong Flexible Watertight Multi-Purpose Sealant 2 pack

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Flex Seal Flex Paste MAX 12 lb. Black All Purpose Strong Flexible Watertight Multi-Purpose Sealant 2 pack

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Flex Seal Flex Paste MAX 12 lb. Black All Purpose Strong Flexible Watertight Multi-Purpose Sealant 2 pack

Item # 1929423

Flex Seal Flex Seal Flex Paste MAX 12 lb. Black All Purpose Strong Flexible Watertight Multi-Purpose Sealant 2 pack
Flex Seal Flex Seal Flex Paste MAX 12 lb. Black All Purpose Strong Flexible Watertight Multi-Purpose Sealant 2 pack

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Flex Seal Flex Paste MAX 12 lb. Black All Purpose Strong Flexible Watertight Multi-Purpose Sealant 2 pack

Item # 1929423

Flex Seal Flex Seal Flex Paste MAX 12 lb. Black All Purpose Strong Flexible Watertight Multi-Purpose Sealant 2 pack
Flex Seal Flex Seal Flex Paste MAX 12 lb. Black All Purpose Strong Flexible Watertight Multi-Purpose Sealant 2 pack

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FLEX PASTE is a super thick rubberized paste that you can spread, shape, form, and seal virtually everything. It starts out as a thick paste and dries to a strong, flexible, rubber coating that can be applied to all types of surfaces to seal out air, water, and moisture. It clings to the surface and instantly fills large gaps, cracks, and holes. It won't shrink or wash away and can be painted any color. Can be applied on dry or wet surfaces, even underwater! Available in white and black. In Tubs and Cartridges.Flex Paste works on: Wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fiberglass, ceramic, porcelain, natural stones, roofing, PVC, EIFS, EPDM, CSPE, Hypalon polyurethanes and much more. Available in 9 oz. caulk gun cartridge, 1lb. large Jar, 3 lb. x large Tub, 6 lb. Jumbo Tub, 12 lb. Giant Tub.

  • Fixing cracks and holes
  • Foundation and concrete repair
  • Sealing out rodents and pests
  • Bath and shower repair
  • Indoor and outdoor projects
  • Roof repair
  • RV and motorhome repair
  • Auto repairs
  • Boat repair
  • Lawn and garden projects
BrandFlex Seal
Country of OriginMade in USA
Container Size12 lb.
Coverage Area120 ft per 12 lb.
Cure Time24 hr.
Dry to Touch15-30 minutes
FeaturesMoisture Resistant, Paintable/Stainable
Indoor/OutdoorIndoor and Outdoor
Longevity99 years
Package Quantity2
Primary ColorBlack
Product Height8 in.
Product Length8.5 in.
Product Weight12 lb.
Product Width8.5 in.
Sealant FormOther
Sealant TypeRubber
Manufacturer Part NumberPFSMAXBLK01
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Reviews

Rating Snapshot

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429 reviews with 5 stars.

4 starsstars

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93 reviews with 4 stars.

3 starsstars

53
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25 reviews with 2 stars.

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52 reviews with 1 star.

Overall Rating

4.3
346 out of 371 (93%) reviewers recommend this product

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Summary of Reviews

AI-generated from customer ratings & reviews, and may include incentivized reviews.
The product is effective for sealing cracks, holes, and leaks on various surfaces and dries quickly. It is versatile, able to be used on both dry and wet surfaces and can be painted over once dry. The paste provides a strong, waterproof seal that holds up well over time. However, some users experien...
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1 to 4 of 652 Reviews .
1 – 4 of 652 Reviews
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Most Recent
dariand_8294
Review 1
5 out of 5 stars.

Great Quick Fix

a year ago
Great product!! We used this to seal a spot on our roof that was leaking. It has held up great and is a quick fix for many household projects. Would definitely recommend to any homeowner.

Originally posted on flexsealproducts.com

kyyyyle_7653
Review 1
5 out of 5 stars.

It works

a year ago
Since it’s a paste, it’s a little thick. But it works! We had a leaky pipe under the sink, we put the paste on one layer and an hour later, no more leaks. Received this product for free.

Originally posted on flexsealproducts.com

tammyc122222
Review 1
5 out of 5 stars.

Fill in

2 years ago
We used this to seal around our tub works well and is very durable. It was easy to use and a small amount goes a long way. I would recommend this product to others

Originally posted on flexsealproducts.com

carolineh
Review 1
4 out of 5 stars.

Easy!

2 years ago
I’ve seen this product so many times but never used it until now. We had a leaky and constantly moving spot from the outside wall around a spigot and I applied this around the faucet and in the space between the wall. It worked wonderfully! It sealed the space up and the faucet no longer moves and was super easy to do. Next up….craft projects!

Originally posted on flexsealproducts.com

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