I had an exhaust leak where the cat and pipe meet. not the headers but the actual exhaust pipe. so i replaced the gasket tightened it back together and started my car. now it's a little bit smaller leak but i want to get it stopped completly. My shop teacher told me to use some kind of high heat 1200 degree silicone, but i cant find it anywhere. Anyone have any ideas or places to get it?

 

Autozone . The red RTV should work

 

I think i saw it, but it's only good to like 800 degrees, and the guys said within a few days it would probly melt off

 

impact gun.... thats what i used tp get my exhaust leak to stop. i impacted the hell out of until it stopped. i couldnt take that chattering niose anymore