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4.5
(366)
4.5 out of 5 stars. 366 reviews
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  11. Flex Seal 16 oz. Liquid Black Liquid Rubber Sealant Coating, 6-Pack

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Flex Seal 16 oz. Liquid Black Liquid Rubber Sealant Coating, 6-Pack

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Flex Seal 16 oz. Liquid Black Liquid Rubber Sealant Coating, 6-Pack

Item # 192942599

Flex Seal Flex Seal 16 oz. Liquid Black Liquid Rubber Sealant Coating, 6-Pack
Flex Seal Flex Seal 16 oz. Liquid Black Liquid Rubber Sealant Coating, 6-Pack

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Shop all Flex Seal
Flex Seal 16 oz. Liquid Black Liquid Rubber Sealant Coating, 6-Pack

Item # 192942599

Flex Seal Flex Seal 16 oz. Liquid Black Liquid Rubber Sealant Coating, 6-Pack
Flex Seal Flex Seal 16 oz. Liquid Black Liquid Rubber Sealant Coating, 6-Pack

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Flex Seal LIQUID is a thick rubberized liquid that you can brush, roll, dip or pour. It starts out as a thick liquid and dries to a strong, flexible, watertight, rubberized coating. Seals out air, water and moisture and is mildew, chemical and UV resistant. Available in black, white, clear, and gray. Flex Seal Liquid is perfect for:Flex Seal Liquid works on: Concrete, glass, brick, stucco, masonry, wood, copper, plastic, tile, fabrics, wires, vinyl, fiberglass, ceramic, porcelain, metal, aluminum, natural stones, foam, asphalt, EIFS, TPO, PVC, EPDM, CSPE, Hypalon polyurethanes and more. Available in pints (16 oz), quarts (32 oz) and gallons (128 oz).

  • Concrete and asphalt repair
  • Foundation repair and preventing basement seepage
  • Weatherizing and sealing out moisture
  • Home and roof repair
  • RV and motorhome weatherizing and repair
  • Pools and pool equipment
  • Outdoor ponds and bird baths
BrandFlex Seal
Country of OriginMade in USA
Container Size16 oz.
Coverage Area18.75 sq. ft. per 16 oz can
Cure Time24 hr.
Dry to Touch2-3 hours
FeaturesFlammable, Moisture Resistant, Non-Toxic
Indoor/OutdoorIndoor and Outdoor
Longevity99 years
Package Quantity6
Primary ColorBlack
Product Height4 in.
Product Length3.375 in.
Product Weight1 lb.
Product Width3.375 in.
Sealant FormOther
Sealant TypeRubber
Manufacturer Part NumberLFSBLKR16
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Reviews

Rating Snapshot

Select a row below to filter reviews.

5 starsstars

279
279 reviews with 5 stars.

4 starsstars

47
47 reviews with 4 stars.

3 starsstars

17
17 reviews with 3 stars.

2 starsstars

4
4 reviews with 2 stars.

1 starstars

19
19 reviews with 1 star.

Overall Rating

4.5
220 out of 231 (95%) reviewers recommend this product

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  • satisfaction
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  • leakage
  • repairs
  • disappointing
  • price
  • material
  • ease of use
1 to 4 of 366 Reviews .
1 – 4 of 366 Reviews
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Most Recent
SIERRA4PAWS
29 PALMS, CA
Review 1
GenderMale
Age65 or over
5 out of 5 stars.

EVERYTHINGS DUCKY

2 years ago
USED IT TO COAT THE INSIDE OF AN 8 FOOT ROUND METAL TUB (SO IT WON"T RUST) THAT WE GOT FOR OUR DUCKS TO USE AS A SWIMMING POOL.

Yes, I recommend this product.

Originally posted on flexsealproducts.com

Response from flexsealproducts.com:
2 years ago
Flex Seal Family of Products Customer Care
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@flexsealproducts.com. Flex On!
Anonymous
Review 1
GenderMale
Age65 or over
3 out of 5 stars.

Flex Seal Liquid - pint

2 years ago
Product works, but despite my securely closing the lid between usage, a portion of the remaining contents start to solidify, requiring removal of that portion to get to useable material.

Yes, I recommend this product.

Originally posted on flexsealproducts.com

Response from flexsealproducts.com:
2 years ago
Flex Seal Family of Products Customer Care
Hi there, thank you for taking the time to share your feedback with us. We're sorry to hear that Flex Seal did not live up to your expectations. When you have a moment, please send us an email at humans@flexsealproducts.com so we can turn your experience around. We look forward to hearing from you, have a great day.
Fred
Washington DC
Review 1
GenderMale
Age55 to 64
4 out of 5 stars.

Looks Like it Will do the Job

2 years ago
The clear coat went on easily and sealed up the seams in my basement cinderblock wall, keeping out rainwater. The Flex Seal couldn't be cleaned from my brush, so I switched to cheap throw-away brushes. During painting and curing, Flex Seal had a very strong odor which permeated the entire house and took 2 days to disperse, even with open windows in the work area and vent fans going full blast. The dried coat is glossy, which makes the painted area reflective and look wet; a flat finish would be much better and non-glare. The Flex Seal liquid did not require mixing, just open the can and apply.

Yes, I recommend this product.

Originally posted on flexsealproducts.com

Response from flexsealproducts.com:
2 years ago
Flex Seal Family of Products Customer Care
Hi there! Thank you so much for your 4 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@flexsealproducts.com. Flex On!
Buddy
Kentucky
Review 1
GenderMale
Age65 or over
5 out of 5 stars.

Repaired cracked rain barrel.

2 years ago
Very surprised, 55 gal resin rain barrel froze and split at the seam

Yes, I recommend this product.

Originally posted on flexsealproducts.com

Response from flexsealproducts.com:
2 years ago
Flex Seal Family of Products Customer Care
Hi there! Thank you so much for your 5 star rating. If you'd like some helpful tips and tricks for future DIY's, feel free to message us at humans@flexsealproducts.com. Flex On!
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