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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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Flex Seal, 14 oz, 4-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, 4-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: 31879156

Details

Brand
Flex Seal
Item Weight
14 ounces
Item dimensions L x W x H
9.5 x 2.5 x
Material
Liquid
Style

💧Watertight flexible sealant

🔥Heat & cold resistant

🛠️Multi-surface compatibility

NZ$238

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered 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 New Zealand.

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Description

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

PAINTABLE FINISH - Customize your repair with any paint color once dry—blend in or stand out.
INSTANT LEAK STOPPER - Spray on and seal leaks in seconds—no mess, no stress.
VERSATILE APPLICATION - Perfect for gutters, roofs, RVs, wood, windows, and more—one spray does it all.
ALL WEATHER DURABILITY - Won't crack in winter or sag in summer heat—reliable year-round.
FLEXIBLE RUBBERIZED COATING - Stays pliable for years, adapting to surface movement without failure.

Flex Seal 14 oz 4-pack is a waterproof, rubberized spray sealant that instantly stops leaks on multiple surfaces including wood, metal, and asphalt. It forms a flexible, durable coating that resists cracking and sagging in extreme temperatures, can be painted over, and is ideal for home, RV, and outdoor repairs.

Specifications

ASIN	B01AKPHYCQ
Best Sellers Rank	#98,340 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #351 in Hardware Sealers
Brand Name	Flex Seal
Color	White
Compatible Material	Asphalt, Metal, Polyvinyl Chloride
Customer Reviews	4.5 4.5 out of 5 stars (415)
Included Components	Flex Seal Spray Rubber Sealant Coating, 14-oz, White (4 Pack)
Item Dimensions	9.5 x 2.5 x 2.5 inches
Item Form	Liquid, Spray
Item Weight	14 ounces
Manufacturer	Swift Response, LLC
Material Type	Liquid
Model	8542053263
Number of Items	4
Part Number	FSWHTR20-4
Style Name	FSWHTR20-M-4PK
Surface Recommendation	Roof,Windows,Wood
Unit Count	56 Ounce
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.

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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.

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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

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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

4 days ago

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NZ$238

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered 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 New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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