Can this be used on a valve cover gasket to get a better seal?

Yes. It is better than OEM gaskets in that it conforms to any warpage, dents, dings, & other incongruities, whereas OEM gaskets are designed for factory new, perfect valve covers without flaws. Withstands 700 degrees.

Can I use this product to seal several non-moving parts of a wood burning stove instead of the standard gasketing material?

This gasketting goop is absolutely incredible for sealing wood stove parts. I’d certainly never use it on the fire box. But it can and will hold to moving parts in high temperatures. It lasts for several years on one application.

can I use this to seal radiator tubes to a heat exchanger in my gas furnace? Gaskets no longer available for it.

Greetings! As I don't know this application, specifically, I can say that say that Ultra Copper is excellent for sealing liquid coolant surfaces in truck/auto repairs. Temperature, up to about 800*F and pressures exceeding 15 psi will remain sealed with this product. U.C. remains a pliant sealing silicone "glue", but it won't harden, as epoxy does. If you need a sealer that also hastens, look elsewhere. If this is for a flange or any flat, secured surface, you're good-to-go. NO acetic acid in this product, if that's a plus for you.

Can I spread this on outside of exhaust manifold leak like you would caulk something or does it have to go between parts? F150 '04 V8

It is too much pressure and heat to use any caulk or rtv. Even muffler cement doesn't work. You might have a lean fuel mixture to cause the problem in he first place. Exhaust bolts rust solid from heat erosion, use the right amount of points on the socket to get bolts out(6 sided bolt--6 sided socket) Copper metal exhaust gaskets work well. Mr. Gasket brand.

Desertcart Logo

Deliver to EGYPT

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔥 Seal the deal with Ultra Copper – where performance meets precision!

OIL RESISTANT ARMOR - Triple the oil resistance for long-lasting, leak-proof seals
FLEXIBILITY CHAMPION - Eight times more flexible than traditional gaskets for perfect fit every time
EXTREME HEAT DEFENDER - Handles exhaust temps up to 700°F without breaking a sweat
VERSATILE APPLICATION - Ideal for exhaust manifolds, valve covers, oil pans, and more—engineered for pros
SENSOR SAFE LOW ODOR - Non-corrosive and low odor formula keeps your engine sensors happy

Permatex Ultra Copper RTV Silicone Gasket Maker is a high-performance, copper-colored sealant designed to withstand extreme temperatures up to 700°F. It offers superior oil resistance and flexibility, ensuring durable, sensor-safe seals for exhaust systems and engine components. Perfect for professional-grade automotive maintenance and repairs.

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.