Permatex 88721 Muffler and Tailpipe Putty, 1.00" x 3.80"

We tried JB Weld Steelstik first, but it did not hold to the higher heat, so we tried Permatex 80333 Muffler and Tailpipe Putty, 4 oz. it has a higher heat resistance. It has worked so far, the hole is near the seam of the muffler, and it just bubbled alittle, but seems to be staying on. The texture of Permatex is softer and more plyable, so its easier to work it into smaller crevices.