[Ed in Maine]

Hello Bob, as always I enjoy your professional drawings. I am too lazy with this job. There is a product called Muffler Weld, Repair and Sealer made by Versal Hem, part no. 00103. The auto parts stores carry it. It comes in a 4 in.round can about 1 in. thick. I use this stuff as a sealant between the exhaust manifold and the pipe. It provides a leak free seal. The nice thing about this stuff is that when you have to replace the muffler, the sealant is very brittle and cleans up quickly. Ed