this is what I packed the muffler with http://shop.steelwooldirect.com/Muff...-4-MP13X36.htm I have more pictures I will post later, he didn't have the size I needed, so he added this size specifically for me, now it's available on the site, this size will tightly pack a 3x13 core muffler
closeup of the packing
this is the packing in the muffler, the standard procedure is to roll it as tightly as possible, then wrap the ends with paper based masking tape, this allows it to slide into the outer shell, and the tape simply carbonizes in the case, it was a very tight fit, then I had to trim the far end before hammering the tube the rest of the way down,on the end caps.
this stuff is good to 700 Celsius that's 1292 Fahrenheit
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