... ring, metal rasching ring, Metal Rasching RingSince 19 14 when F.Raschig invented this type of ring for tower packing, random tower packing has ... in many applications, but particularly in supporting catalyst beds.DOHNTEC metal Rasching rings are available in a wide range of carbon ... : carbon steel, stainless steel including 304, 304L, 410,316, 316L. metal Rasching Ring