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.

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

Not likely.

Paul Lamar
 
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