Actually, they use it to pack the silencer...it just has the added benefit of protecting the pipe during shipment.
If it was just about protecting the pipe, there's plenty of different packaging material better suited for the task.


fx4, are you talking about the stuff that was in a tube/rope like form?
You just wrapped the silencer mesh with it and stuffed the whole thing into the silencer body, if I'm not mistaken.
I was looking for it too and can't find any solid info.
Looks kinda like this?