Would flex tape/spray work on a leaky radiator?

Thank you for reaching out! Flex Seal Spray has not been tested on this type of application, it is not made to withstand extreme heat or pressure. Flex Tape however will function in temperatures from -70º – 200ºF. Lucas - Customer Care at Flex Seal Products (Swift Response The makers of Flex Seal)

how much coverage is in one 14oz can

I don’t know. I aborted my project after it started melting away.

Is the spray good to use in a dish washer with hot water. To be used on dish racks

Flex Seal is not FDA approved and should not be used around items that will be exposed to things you will be eating/drinking out of.

Will this stick to galvanized metal / steel ... ??? Thanks ,,!!

It didn’t work as advertised for me. I’d talk to my helpful Hardware Man…

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

Product ID: 92976181

Details

Brand
Flex Seal
Item Weight
14 Ounces
Item dimensions L x W x H
9.5 x 2.5 x
Material
Rubber
Style

💧Instant waterproof seal

🌡️Heat & cold resistant

🛠️Flexible rubber coating

₨18290

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

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Description

💧 Seal it. Protect it. Forget leaks forever.

FLEXIBLE DURABLE - Rubberized coating stays pliable for years, resisting cracks and peeling.
CUSTOMIZABLE FINISH - Dries white but can be painted any color to match your style.
MULTI SURFACE MASTER - Perfect for gutters, roofs, wood, RVs, and even wet surfaces.
SEAL LEAKS IN SECONDS - Spray on and stop leaks instantly—no mess, no stress.
ALL WEATHER PROTECTION - Withstands scorching heat and freezing cold without sagging or cracking.

Flex Seal is a 14 oz white spray rubber sealant that instantly stops leaks by creating a waterproof, flexible coating. Ideal for a wide range of surfaces including gutters, wood, roofs, and RVs, it resists extreme temperatures and can be painted over once dry, offering long-lasting protection and versatility.

Specifications

ASIN	B07JNLJ2BX
Best Sellers Rank	#350,524 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,019 in Hardware Sealers
Brand	Flex Seal
Brand Name	Flex Seal
Color	White
Compatible Material	Asphalt, Metal, Polyvinyl Chloride
Customer Reviews	4.3 out of 5 stars 1,630 Reviews
Included Components	Flex Seal Spray Rubber Sealant Coating, 14-oz, White
Item Dimensions	9.5 x 2.5 x 2.5 inches
Item Form	Spray
Item Weight	14 Ounces
Item dimensions L x W x H	9.5 x 2.5 x 2.5 inches
Manufacturer	Swift Response, LLC
Material	Rubber
Material Type	Rubber
Model	8542053401
Number of Items	1
Part Number	FSWHTR20
Style	FSWHTR20-M-1PK
Style Name	FSWHTR20-M-1PK
Surface Recommendation	Roof,Windows,Wood
Unit Count	14.0 Fluid Ounces
Water Resistance Level	Waterproof

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

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

4 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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₨18290

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

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

5 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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