would it work on a cylinder head? much as used for racing?

There is no single answer. The use of this sealant depends on the type of gasket you are working with. If you have solid copper gasket or a metal clad composite (say... copper foil skin sandwiching a fiber core) then yes it would work on those gaskets. If you have a composite fiber gasket with fire rings and no coating then again... it would work. If your gasket is of fiber construction and has a shiny coating on it that looks like varnish... don't use this spray without referring to the literature supplied with the gasket. Many modern gaskets come with a pre-applied sealant coating so you don't want to add additional (and possibly incompatible) sealant spray. Sorry, but as I said, it really depends on the type of gasket you are working with.

will this coating make the head harder to remove if necessary?

Actually, I used it and had to remove my head gasket six months after, not because of this stuff though. The gasket came off no problem. I don’t know if this stuff really does anything though. As long as your head and block are surfaced properly, you shouldn’t need it.

Can this be used on felpro gaskets for timing covers, thermostats, water pumps and so on?

I used it on head Gaskets and worked well so I don't see why not its a really tacky solution help hold gasket in place and seal

Can this be used on a gasket that sits between an aluminum head and aluminum engine block? Possible corrosion?

We use this on aluminum heads and blocks all the time for Mercedes-Benz

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

S/S Permatex® - Copper Spray-A-Gasket - High-Temperatrue Sealant - 255g #80697

S/S Permatex® - Copper Spray-A-Gasket - High-Temperatrue Sealant - 255g #80697

Product ID: 63090843

Details

Brand
Permatex
Item dimensions L x W x H
6.7 x 6.7 x
Item weight
340 g
Material
metal
Style
spray high

⚡Fast-drying metallic copper sealant

🔥Temp range -50°F to 500°F

🛠️Seals & fills hot spots instantly

€ 56.22

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Description

🔥 Seal the deal with copper power – your engine’s hottest new ally!

FLUID RESISTANT SHIELD - Resists all automotive fluids, especially gasoline, ensuring a leak-proof, high-performance seal.
UNIVERSAL COMPATIBILITY - Perfect for cylinder heads, carburetors, exhaust manifolds, and more—domestic or import, any model year.
HEAT DEFYING PERFORMANCE - Withstands extreme temps from -50°F to 500°F, keeping your engine cool under pressure.
INSTANT SEAL ZERO DOWNTIME - Fast-drying formula seals gaskets instantly, so you get back on the road faster.
COPPER POWERED HEAT TRANSFER - Metallic copper base improves heat dissipation and prevents gasket burnout for lasting durability.

Permatex Copper Spray-A-Gasket is a high-temperature, fast-drying metallic copper sealant designed to fill surface imperfections and hot spots. It resists automotive fluids, especially gasoline, and operates effectively between -50°F and 500°F. Ideal for cylinder head, carburetor, and exhaust manifold gaskets, it prevents gasket burnout and improves heat transfer, making it a trusted choice for both import and domestic vehicles.

Specifications

ASIN	B000HBNUDQ
Best Sellers Rank	12,135 in Automotive ( See Top 100 in Automotive ) 150 in Fillers, Adhesives & Sealants
Brand	Permatex
Colour	Copper
Compatible Material	Ceramic
Country Of Origin	USA
Customer Reviews	4.7 4.7 out of 5 stars (1,540)
Global Trade Identification Number	00686226806970
Item Dimensions	6.7 x 6.7 x 16.2 centimetres
Item Form	Spray
Item Weight	340 g
Manufacturer	Permatex
Manufacturer Part Number	80697
Material	metal
Model Number	80697
Number of Items	1
Number of Packs	1
Style Name	spray, high temperature
Surface Recommendation	Metal
UPC	686226806970
Unit Count	266 millilitre
Water Resistance Level	Not Water Resistant

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

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

€ 56.22

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews