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

Used on diesel turbocharger, sealent was 98% intact between turbocharger n exhaust manifold. As said by manufacturer had to allow 24 hrs before starting the engine.

This item very useful it's working I'm using in my car in between torcher to dpf silencer no gas leak

Not working properly

Peels off easily so not very useful unless metals are bound together with nuts.

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!

Sehr gutes Produkt.

Shows 2 tubes in the picture. Description says 2 pack. Costs about what you'd expect for two tubes, but you only get one. Just go down to the local auto parts store.

Delivered as described.

Five stars for a tube of sealant that appears to understand its role in life perfectly: go where it’s put, stay there, and stop important things from leaking out. Permatex Ultra Copper is excellent stuff. It applies well, spreads nicely, and gives you that reassuring sense that you are using a product designed by people who have met an engine and bear it no ill will. I used it for a gasket job where you very much want reliability over theatrics, and it behaved impeccably. What I liked most was that it felt properly substantial and easy to work with. Not too runny, not awkward, and it set up well. Once cured, it gave a solid, dependable seal and inspired far more confidence than some cheaper alternatives that seem to regard sealing as more of a philosophical suggestion. It’s the sort of thing you keep in the toolbox because sooner or later something hot, mechanical, and faintly temperamental will require attention. When that moment comes, this is exactly the kind of product you want on your side. Very good quality, does the job properly, and well worth having around