

🔥 Seal the heat, ditch the leaks – your exhaust’s new best friend!
Permatex Ultra Copper RTV Silicone Gasket Maker is a professional-grade, high-temperature sealant designed for exhaust systems and high-performance engines. It offers exceptional heat resistance up to 700°F, superior flexibility, and enhanced oil resistance, making it ideal for turbocharged and OEM-specified engines. Its sensor-safe, low-odor, and non-corrosive formula ensures compatibility with modern engine components, delivering durable, leak-proof seals that outperform conventional silicones.




| ASIN | B0002UEOPA |
| Best Sellers Rank | 11,820 in Automotive ( See Top 100 in Automotive ) 121 in Fillers, Adhesives & Sealants |
| Brand | Permatex |
| Colour | Copper |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,018) |
| Date First Available | 16 Aug. 2010 |
| Item Weight | 85 g |
| Material | Silicone |
| Model Number | 81878 |
| Product Dimensions | 20.32 x 10.16 x 5.08 cm; 85 g |
S**G
No more leaks!
I had constant issues stopping my motorbike exhaust from leaking and losing back pressure but this stuff is brilliant! Much better than other exhaust sealing compounds which go hard, brittle and fall out after a few hundred miles. Very impressed!
M**X
Perfect
Excellent for sealing up exhausts
B**C
Does the job
Does what it says, easy to use and no issues
I**L
What you see is what you get
As described
J**S
Works well
Good product, used to repair a gasket on ceramic bbq. Bottle lid broke after a few weeks
S**N
Perfect for gasket sealing on a Kamado Grill
Perfect for resealing the mesh gasket on my Kamado Joe Classic 3
R**S
One time use
Squeezed the tube, and it just unraveled the back end and came out there instead of the nozzle. Now needs to be binned.
E**O
Este sellador de silicona de alta temperatura ha funcionado de manera excelente en las uniones del escape de mi motocicleta. Su resistencia al calor extremo garantiza un sellado duradero sin deteriorarse con el tiempo. La aplicación es sencilla y la adherencia es muy buena, asegurando que no haya fugas ni vibraciones molestas en las conexiones. Además, su formulación a base de cobre proporciona una excelente conductividad térmica y estabilidad en condiciones exigentes. En general, un producto confiable y altamente recomendable para sellar uniones expuestas a altas temperaturas, como sistemas de escape y componentes de motor. ¡Gran desempeño!
L**L
Sehr gutes Produkt.
J**E
Product works very well, let is harden for at least 24 hours ! Exhaust leak resolved.. A+
名**し
アフターファイヤー予防の為使用しました。 分割型のマフラー接合部に薄く塗りました。試運転したところ何事もなく良い感じです。 難点は、この量を個人で使い切るには多すぎること。恐らく自分のペースでは生きている間に使い切ることはできないでしょう。その前にチューブの中で固まってしまうかも。そう思って付属のチューブは使わず、出口から指ですくって塗り拡げました。そうすることで空気に触れていない逆側からハサミを入れ、固まってないところからまた使おうという浅ましい考えです。 個人購入の方、ご利用が計画的に。
R**6
Utilisée pour coller le joint de mon Kamado. livraison rapide.
Trustpilot
3 days ago
1 month ago