I have a wooden bucket ice cream maker that won't swell anymore and the water leaks out of it. Will this work with the salt brine?

I am not sure if this would work. I would try gorilla glue.

Can this effectively seal a leaky window?

Yes many people have had great success fixing a leaky window with Flex Seal. You can use painters tape to section off the area you want to apply it to. You may also want to try Flex Shot, which is a rubber caulking material, and will give you pinpoint accuracy.

Will it seal the bottom of a blow up matress

Thank you for reaching out! We do not recommend Flex Seal Spray for this application, it is not meant for high pressure or temperature situations. Lucas - Customer Care at Flex Seal Products (Swift Response - The makers of Flex Seal)

would this be good for a bed truck liner?

Not sure, it would take an awful lot to spray a bed of a truck and we found it to be sticky when it got hot! We used it on a gutter so it didn't matter.

Flex Seal Spray Rubber Sealant Coating 14oz Pack Of 2

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$124.13

Duties & taxes included

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖤 Seal it, spray it, own it — Flex Seal your fixes like a pro!

PAINTABLE FINISH - Customize your repair with a sleek black coat
FLEXIBLE DURABLE - Rubberized coating that bends without breaking
RAPID LEAK STOPPER - Seals leaks instantly to save your day
MULTI SURFACE MASTER - Perfect for metal, wood, gutters, RVs & more
ALL WEATHER PROTECTION - Waterproof barrier guards against moisture & rust

Flex Seal Spray Rubber Sealant Coating (14oz, 2-pack) delivers a fast, flexible, and waterproof rubberized barrier that stops leaks and protects surfaces from moisture and rust. Ideal for quick repairs on metal, wood, gutters, and RVs, it offers a durable black finish that’s paintable for a seamless look.

Specifications

ASIN	B005SGM0YK
Best Sellers Rank	#52,808 in Automotive ( See Top 100 in Automotive ) #221 in Automotive Fillers, Adhesives & Sealants
Brand	Flex Seal
Brand Name	Flex Seal
Color	Black
Compatible Material	Rubber
Customer Reviews	4.5 out of 5 stars 3,635 Reviews
Global Trade Identification Number	00810129871357
Item Dimensions	24.1 x 6.4 x 6.4 centimeters
Item Form	Liquid, Spray, Aerosol
Item Highlight	Stops leaks fast, seals out water, air, moisture, prevents rust, paintable, flexible, gutters, roof repair, RV, wood, metal
Item Weight	28 Ounces
Item dimensions L x W x H	24.1 x 6.4 x 6.4 centimeters
Item weight	28 Ounces
Material	Rubber
Material Type	Rubber
Model	FSR20-2
Number of Items	2
Number of Packs	2
Part Number	FSR20-2
Style	Compact
Style Name	Compact
Surface Recommendation	Window
UPC	810129871357
Unit Count	14 Ounce
Water Resistance Level	Waterproof
Water resistance level	Waterproof

Reviews

B**R

Excelente producto

Buen producto para una reparación rápida

22.02.2024

R**A

Seal my paradise corner

I love this stuff. I need to order four more cans. I am spraying my stock tank to turn it into pool seal all the small holes and crevices. This stuff works like magic. I’m also gonna put a liner in it, but the whole exterior will be spray painted in this flexseal.

25.08.2026

P**R

Thick black sealing spray over the sunroof leak

Plenty of spray in each can. Thick black sealing spray over the sunroof leak. only needed 1/4 can. More for another job.

11.08.2026

R**N

will order more

amazing product

11.07.2026

S**N

Quality product

Works great. Good temporary fix

5.07.2026

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$124.13

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago