Can you use this Flex seal too caulk around your window frames? (more like a insulation)?, or stop a small draft creeping thru your window pane?

I'm sure you can. I have a waterwheel and trough. I sealed the trough, as it was leaking in several places. Even though water runs rapidly down the trough, I've had no leaking now for 2 years. I also used it to seal a leak on my ATV tir rim. The rim had a slight curve and wouldn't hold air. I sealed the sot that was leaking and it worked perfectly.

I have a leak in my car trunk, can this be used?

It really depends on why there is a leak, but probably not. If it's the weather stripping around the trunk (that rubber tubing stuff), I doubt that this stuff will replace or repair that. That's the most likely reason you have a leak. The seal needs replacing.

Can it be used on concrete?

Yes you can use Flex Seal on concrete.

I would like to use this to refinish and seal up a mobile home bathtub. Does it clean easily? Will it hold up to the constant use of a bathtub?

It will definitely seal and refinish the tub. I’m not sure about easy clean up as I only used it on a boat but it should clean up nicely as it seems to be self leveling spray and is very smooth when completely cured

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Flex Seal, 14 oz, 2-Pack, White, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More

Flex Seal, 14 oz, 2-Pack, White, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More

Product ID: 258860070

Details

Material
Rubber
Brand
Flex Seal
Style
Item weight
1.04 kg
Item dimensions L x W x H
24.1 x 6.4 x

💧Instant waterproof seal

🌡️Heat & cold resistant

🛠️Flexible rubberized coating

Description

💧 Seal it. Protect it. Flex it. The ultimate leak-stopper for pros who won’t settle.

PAINTABLE FINISH - Once dry, customize with any paint color to blend seamlessly with your surfaces.
DURABLE FLEXIBILITY - Stays pliable for years without cracking or peeling, even in extreme temperatures.
SEAL LEAKS INSTANTLY - Sprays on liquid rubber that seeps into cracks and dries fast for a watertight barrier.
VERSATILE APPLICATION - Perfect for gutters, roofs, RVs, windows, and countless DIY projects.
CORROSION NOISE PROTECTION - Blocks moisture and rust while dampening vibrations and noise for a quieter, longer-lasting fix.

Flex Seal is a 14 oz dual-pack spray-on rubberized sealant that instantly stops leaks by forming a flexible, waterproof coating. Designed for durability, it resists cracking and peeling in extreme weather, protects against corrosion, and can be painted over for a clean finish. Ideal for a wide range of surfaces including gutters, roofs, RVs, and windows, it’s the go-to solution for fast, reliable repairs and creative projects.

Specifications

ASIN	B00W5Y2X36
Best Sellers Rank	#119,604 in Automotive ( See Top 100 in Automotive ) #383 in Automotive Fillers, Adhesives & Sealants
Brand	Flex Seal
Brand Name	Flex Seal
Color	White
Compatible Material	Rubber
Customer Reviews	4.4 out of 5 stars 10,827 Reviews
Global Trade Identification Number	00810129871333
Included Components	Flex Seal Spray Rubber Sealant Coating, 14-oz, White (2 Pack)
Item Dimensions	24.1 x 6.4 x 6.4 centimeters
Item Form	Spray
Item Weight	2 Pounds
Item dimensions L x W x H	24.1 x 6.4 x 6.4 centimeters
Item weight	2 Pounds
Manufacturer	Swift Response, LLC
Material	Rubber
Material Type	Rubber
Model	FSWHTR20
Number of Items	2
Number of Packs	2
Part Number	FSWHTR20
Style	FSWHTR20-A-2PK
Style Name	FSWHTR20-A-2PK
Surface Recommendation	Wall, Floor, Ceiling, Siding, Roof, Window, Door, Fixture, Countertop, Tub, Shower, Gutter, Tile, Mirror
UPC	810129871333
Unit Count	28 Milliliters
Water Resistance Level	Waterproof
Water resistance level	Waterproof

Reviews

A**F

Poor prodect

Not useable

18.06.2021

D**L

Good

27.12.2023

S**O

Atende a expectativa.

Produto resolveu um problema entre a calha e a parede evitando escorrimento de água da chuva mostrou-se mais eficiente que o veda calha. Esperar para ver a durabilidade do produto sob as intempéries.

7.04.2021

R**U

Good product

Good product probably need to use in conjunction with paste for larger leaks worked very well on my steel roof.

12.06.2026

C**N

Resistencia e impermeable en grietas .

La verdad, mejores resultados a los esperados, selló muy bien las grietas que me Quedaron después de instalar techo de madera en la terraza , resiste espectacular

7.07.2021

T**.

Perfect product

Worked perfectly to seal some bolts on my Ute canopy.

6.08.2026

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In stock

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