Flex Seal 2-Pack Black 17oz Stop Leaks Instantly, Waterproof Sealant Coating For Gutters, RV, Roof, Skylights, Windows
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Flex Seal 2-Pack Black 17oz Stop Leaks Instantly, Waterproof Sealant Coating For Gutters, RV, Roof, Skylights, Windows

4.4/5
Product ID: 530355114
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Details

  • Material
    Rubber
  • Brand
    Flex Seal
  • Style
    MAX 2 Pack -
  • Item Weight
    17 Ounces
  • Item dimensions L x W x H
    11 x 6 x 3
💧100% waterproof, stops leaks instantly
🌡️Heat & cold resistant, no cracking or peeling
🛠️17oz dual-pack for extended use

Description

🛡️ Seal it, save it, and never stress a leak again!

  • DUAL 17 OZ POWER PACK - Two generous cans to tackle multiple projects or bigger repairs without running out.
  • PAINTABLE VERSATILE - Dries black but can be painted any color to seamlessly blend with your home or vehicle.
  • ALL WEATHER DURABILITY - Formulated to resist sagging in summer heat and cracking in winter cold—year-round reliability.
  • SEAL PROTECT INSTANTLY - Stops leaks fast with a flexible, rubberized coating that adapts to any surface.
  • MULTI SURFACE COMPATIBILITY - Works on roofs, gutters, RVs, windows, wood, metal, concrete, and more—your go-to fix-all.

Flex Seal 2-Pack Black 17oz is a professional-grade, waterproof rubberized sealant designed to stop leaks instantly and protect surfaces year-round. Its flexible formula resists cracking and peeling across extreme temperatures, adheres to a wide range of materials, and dries to a paintable finish—perfect for durable, long-lasting repairs on gutters, roofs, RVs, windows, and more.

Specifications

MaterialRubber
BrandFlex Seal
StyleMAX, 2 Pack - Black, 17 oz.
Item Weight17 Ounces
Item dimensions L x W x H11 x 6 x 3 inches
Compatible MaterialAsphalt, Porcelain, Vinyl, Wood, Aluminum, Glass, Plastic, Concrete, Metal, Rubber, Polyvinyl Chloride
Water Resistance LevelWaterproof
Item FormLiquid, Spray
UPC810129870329
Number of Items2
ColorBlack
Surface RecommendationRoof,Windows,Wood
ManufacturerFlex Seal
Part NumberFSMAXBLK24-2PK
Item Weight1.06 pounds
Product Dimensions11 x 6 x 3 inches
Country of OriginUSA
Size17 oz (Pack of 2)
Item Package Quantity2
Batteries Included?No
Batteries Required?No

Have a Question? See What Others Asked

Will flexseal fix an oil leak

Reviews

4.4

All from verified purchases

D**R

Easy quick fix

I used it to seal a couple small cracks in a canoe. So far no leaks! Works as advertised

C**

Sealant

Works as it should! Helps seals, adheres well to different textures. Easy to apply to surface. Great value

A**S

Good stuff but be cautious!

PLEASE read to directions carefully because this stuff is full of dangerous and flammable chemicals. It does work for sealing leak causing cracks. Don't know how well it will last in sunlight but for a short term fix it seems to work fine.

K**A

Great Product!

Thanks to Mother Nature, and a moderately damaging hail storm, my camper trailer suffered some damage to the 2 roof vents, with some fairly large chunks completely knocked out. I had already replaced the roof vents in 2017, due to a worse hail storm, and wanted to consider an easier fix. So...I used Titebond glue to adhere strips of drywall repair mesh (comes in a long roll, like drywall tape) over the gaps and to stabilize the multiple cracks. I put a small piece of painters' blue masking tape on the inside of the vent where the mesh was open to the interior, as I couldn't find a good size chunk of the roof vent plastic. The following day I used the Flex Seal Max spray over the entire surface of both roof vents. I sprayed it on very thick, to completely cover the mesh tape. The consistency of this product is obviously thin enough to produce an easily-sprayed product, for better aesthetic coverage, but it was probably a bit too thin for my application. I also used a 2" disposable foam brush to try and get thicker coverage over the mesh taped areas, once the product had started to set-up. The product's solvent evaporates fairly quickly, so I made another spray pass over the hand-brushed areas for better looks, and in case I had disrupted the coverage, to avoid leaks. The job looks great and appears to be adequately sealed. I'm also hoping that the 'rubberized' coating may be more hail resistant. Plastics at Denver's altitude take a real beating from UV exposure, so I'll see how this idea pans out. This spray also may be a good idea as a preventative to avoid moderate hail damage. Update: after waiting several days for the Flex Seal to cure, I tried to remove the small strip of blue painters' tape from the inside of the roof vent. The Flex Seal stuck to it pretty bad, and stripped off a little of the product. Luckily, I still had some left in the large, 17oz can, and made another pass to seal off the few small holes. Hopefully I'm now done with this project!

S**N

Easy to use

Works great and easy to use in hard to get spaces.Effectiveness:fast to install.

D**L

Worked after using the whole can.

I had a leaky birdbath that I sealed with this. Unfortunately, it took about 5 or 6 coats to create a complete seal. The birdbath held water except for a minor crack so it should not have required that many coats.

W**K

Quick and easy camper shell repair

Resolved my problem with a leaking fiberglass camper shell. It took two full cans to cover two coats over my 8-ft camper shell.

R**B

Great product

I have a fiberglass camper shell on my Ram and haven't been able to stop the leak(s) around the double doors. I cleaned the area, sprayed around everything penetrating the shell, no more leaks.

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Flex Seal 2 Pack Black 17oz Stop Leaks Instantly Waterproof | Desertcart KSA