Nobody seemed to think that the material changed-has anyone seen fiber or steel when working on the exhaust?[/quote]

Just had the exhaust off my SRT6, and the drivers side header connection has the steel doughnut, with two flanges, however the passenger side header slips inside the muffler pipe, with a fibre type seal, anyone know what the part number is for the fibre one, or where to get one ?
Cheers