PermatexULTRA COPPER RTV GASKET MAKER NET.85g/ 3.OZ

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.

4.8/5

Product ID: 255417989

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💧Oil Resistant

🔥High-Temp Resistance

🛠️Universal Fit

Frequently Bought Together

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

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Description

🚀 Seal the Deal with Confidence!

SENSOR SAFE FORMULA - Low odor and non-corrosive for safe applications.
VIBRATION RESISTANT - Engineered to endure auto and shop fluids while resisting vibration.
SUPERIOR FLEXIBILITY - Eight times more flexible than traditional gaskets.
OIL RESISTANCE CHAMPION - Three times more oil resistant than conventional silicones.
UNMATCHED TEMPERATURE TOLERANCE - Withstands -65°F to 700°F for extreme conditions.

The Permatex Ultra Copper RTV Gasket Maker is a high-performance silicone gasket solution designed for extreme temperatures and demanding applications. With a temperature range of -65°F to 700°F, it offers superior flexibility and oil resistance, making it ideal for turbocharger and exhaust systems. Its sensor-safe, low-odor formula ensures safe use, while its advanced adhesion properties provide a reliable seal even on oil-contaminated metals.

Specifications

Manufacturer	permatex
Part number	81878
Item Weight	85 g
Product Dimensions	20.32 x 10.16 x 5.08 cm; 85 g
Item model number	81878
Size	3 Ounce Tube
Color	Black
Style	Permatex 81878 Ultra Copper Gasket Maker Exhaust - 3.5 oz.
Material	Silicone
Item thickness	1 Inches
Item Package Quantity	1
Special Features	Forms a superior bond on oil contaminated metals and maintains outstanding oil resistance
Included components	silicone
Batteries Included?	No
Batteries Required?	No

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

Reviews

4.8

All from verified purchases

A**N

Do NOT apply on your exhaust flanges

My heart is still pounding as I was rushing in all directions trying to get something to extinguish the fire with. I applied this RTV on the collector flange, downstream the headers, to arrest a leak and correct the AFR reading on the wideband. I saw some smoke, and I thought maybe it's the high temp paint on the header. Next I saw flames, and you know the rest. Beware, for your own safety!

3.03.2023

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

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

1 day ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

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