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Leak Stopper Rubber Flexx Gloss Black Rubber Polymers Leakseal Flexible Rubber Sealant 18 oz

Leak Stopper Rubber Flexx Gloss Black Rubber Polymers Leakseal Flexible Rubber Sealant 18 oz

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

A flexible rubber sealant in a spray can that cures in just 6 hours for quick roof and driveway fixes.
Leak Stopper MPN 0316-GA-6 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $11.99. Our online price is $12.99.
$12.99
Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days
Cases of 6 · Order in multiples of 6

Sold by the Case

$77.94 per case of 6

Save $11.70 on orders $75+. Spend $75 or more to unlock 15% off cases plus free shipping — applied automatically at checkout.

Ships as a complete case of 6. Free shipping on orders $75 and up.

About Product Overview

Leakseal Sealant from Leak Stopper is a flexible rubber sealant in an 18 oz aerosol can, built to patch and seal roof and driveway trouble spots without mixing or brushing. The rubber polymer formula goes on solid black with a gloss finish and stays flexible once cured, so it can handle the flexing and settling that cracks plain caulk. Covers about 6.2 square feet per can and cures fully in 6 hours, so repairs don't sit open for long.

  • 18 oz aerosol can, black, gloss finish
  • Rubber polymer coating stays flexible after cure
  • Covers approximately 6.2 sq. ft.
  • Full cure in 6 hours; made in the USA

The Details Specifications

Special Handling Special handling and shipping requirements apply.
Brand Leak Stopper
UPC 025056031600
Case Pack Quantity 6 per case
Retail Unit Quantity 6
Dimensions (L × W × H) 9 × 6 × 10
Weight 9 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to open the other tab. Everybody does. We'd rather say so than pretend otherwise — so open it. We'll wait.

When you're over there, check four things before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Leak Stopper. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

We're not always the cheapest.

Sometimes you'll find it for less. Sometimes you'll find it for more. On a lot of brands the number is identical everywhere it's sold legitimately — the manufacturer sets a minimum advertised price and every authorized dealer holds it. When a price sits well under that, it's worth asking why before it's worth celebrating.

How pricing actually works
Authorized dealer · Leak Stopper

Or skip both tabs and buy it down the street. Find a store near you →

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Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
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Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

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Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

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About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a familiar banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

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