Someone described a muffler:

Inner tube 4" of  stamped perforated tube (300mm long 1.2mm thick)  -

filled with

very tighly packed fibreglass. The ends of this tube are sealed with

a half dome end

plate 1.2 to 1.6mm thick.

Don asked:

Will the fiberglass packing survive the exhaust heat of a rotary???

Paul Lamar responded:

Not likely.

Hans disputed: :-)

Sure it will survive!  For 15, maybe 20 minutes.

Does anyone make Inconel wool?

Russell Kent

Just a thought... This sounds strange, but has anyone tried using the
ceramic "noodles" intended for canister aquarium filters (such as the
Eheim) in place of packed fiberglass?  I tried to melt one with my
oxy-acetylene torch and it just glowed red, but it didnt' melt.  Should be
stout enough for a rotary muffler.

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