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S/S Permatex - Ultra Copper - RTV Silicone Gasket Maker - Exhausts to 700oF - 85g

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Product ID: 50081863

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Details

Colour
Copper
Brand
Permatex
Item weight
85 Grams
Liquid volume
3000
Full cure time
24 Hours

🔥Withstands up to 700°F

🧴Compact 85g tube for precision

🛠️Advanced RTV silicone formula

Frequently Bought Together

Permatex 81878 Ultra Copper Maximum Temperature RTV Silicone Gasket Maker, 3 oz. Tube

J-B Weld 37901 ExtremeHeat High Temperature Resistant Metallic Paste - 3 oz

Permatex 80335 Muffler and Tailpipe Sealer, 3 oz., Plastic, 1 Count (Pack of 1)

Description

🔥 Seal the heat, own the street!

COPPER COLOR FINISH - Professional copper hue blends seamlessly with exhaust parts🟠
PRECISION APPLICATION - Compact 85g size for controlled, mess-free use🧴
EXTREME HEAT RESISTANCE - Keeps your exhaust sealed even at 700°F🔥
TRUSTED BRAND RELIABILITY - Permatex quality ensures peak performance every time✅
NEXT GEN SILICONE TECHNOLOGY - Most advanced RTV gasket maker for lasting durability🛠️

Permatex Ultra Copper RTV Silicone Gasket Maker is a high-performance, copper-colored silicone sealant designed for exhaust systems. It withstands extreme temperatures up to 700°F, ensuring durable, leak-proof seals. Packaged in a convenient 85g tube, it offers precision application for professional-grade vehicle maintenance.

Specifications

Brand	Permatex
Model Number	81878
Colour	Copper
Product Dimensions	20.32 x 10.16 x 5.08 cm; 85 g
Material	Silicone
Item Weight	85 g

Have a Question? See What Others Asked

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

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

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

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

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