81630 Ultra Red High Temperature Gasket Maker, 3 oz

Just the rtv you expect from permatex. High quality sealant I've used for years. Buttoned up my old Fiat with a tube of this stuff and haven't seen any leaks or weeps anywhere I used this. Great to have around the garage for when you dont have a gasket on hand

Works well for keeping bolts and nuts from vibrating loose. However, if you need to replace them you will need a torch to loosen up the nut and bolt!

I used the Permatex Ultra Red 81630 on a high-heat automotive application, and it performed exactly as expected. It spreads easily, creates a strong, flexible seal, and handles high temperatures without cracking or shrinking. The curing process was straightforward, and once fully cured, it provided a leak-free seal. It's perfect for exhaust manifolds, headers, turbo components, and other high-temperature areas. The 3 oz tube is easy to use and provides enough material for several repairs. I would definitely buy it again for future automotive projects.

good solid product

Great product, but make sure you've worked on your grip strength to get this out of the tube. I actually cut a fairly large application port into the lid and it still took all my strength to get this to come out smoothly. Additionally, the metal tube eventually broke in the process before everything was applied. It makes a fantastic seal though and I feel confident that my oil pan gasket replacement will last for the remaining life of the car.

I’m using this to fix my oil pan gasket. Worth the money.

This ultra red is real nice, better than the their regular red silicone. All the ultra permatex silicones are better than the regular ones.

Works

Très satisfait de ce Permatex Ultra Red. Le produit est facile à appliquer et permet de réaliser un joint propre et bien étanche, notamment sur des éléments mécaniques soumis à de fortes températures. Il adhère bien et reste suffisamment souple une fois polymérisé. J’apprécie également le format en tube, pratique pour conserver le produit et en utiliser seulement la quantité nécessaire. Il faut simplement éviter d’en mettre trop, comme avec tous les produits de ce type. Une pâte à joint efficace et fiable, que je garde volontiers dans mon stock d’atelier.

Excellent