Well lately i have been working on putting on my own dual exhaust. i bought a couple of flowmaster 40 series mufflers and went to work. Half way through I decided that I no longer wanted to do the job and decided I would pay someone to do it. To my misfortune I couldn't find a shop to do it with the cats removed. So i continued with the installation myself. Its all together now and my welds around the joints are far from perfect and are probably leaky. So my question is does anyone have any suggestions on what i could use to seal the joints to last as long as possible. I have heard of using silicone but idk. Id like to hear some experiences and suggestions first. Thanks in advance.