CX-5 Muffer and Exhaust Leak Warranty?

[xMarc]

Along with cleaning the muffler and pipe flange and buying a new gasket, what sealant would be appropriate to help with the small leaks from irregularities of the connection?

Permatex Copper Spray-A-Gasket Hi Temp Adhesive Sealant or something similar?

 

[Mazdiod2]

Shouldn't the gasket fill any voids?

If it didn't I think I might try a different gasket, or maybe add another somehow.

 

[xMarc]

It should, however mine still leaks slightly from the top of the flange. Both sides have been sanded and cleaned but the issue remains. Maybe, somehow, the flange or pipes became misaligned/askew.

I'm buying a new gasket to replace the previous one purchased last year and would like to add something that will help void the minor gap.

 

[MyFirstMazda]

Maybe try Permatex exhaust sealer

Exhaust Sealer

 

[MyFirstMazda]

It is best to just use a gasket, I think the Permatex exhaust sealer cures into a tough glue that will be hard to get off next time.

 

[Mazdiod2]

Once I tried using some kind of exhaust repair material but it couldn't fill a very large void. It seemed to resist heat ok.

Maybe some pics of the problem would help find a good solution.