JB Weld for Mail box?

[chipmanbbq]

Do you guys think I would have any issues using some sort of JB weld to attach my dryer vent duct to the actual mail box?

I see a lot of people use high temp aluminum tape, but I figured I could get a cleaner look and possibly a better seal using JB weld.

The only thing I was worried about was fumes, but I'm not sure the mailbox will get hot enough to cause any problems.

Any thoughts?

 

[dr k]

I put Permatex Ultra Copper RTV 700*F silicone on the outside of the joint. Great seal but also not as permanent. Plus you can seal probe/cable therm joints, make pucks in tea light aluminum candle molds for for cooking chamber probe holders etc. I found it for $5.00 at Menards. Probably at any automotive department.
-Kurt