Rolled dixon rings are small granular fillers made of sheet metal with a diameter equal to the height. Calendered orifice packing is mainly used in laboratory and small batches of high-purity product separation processes. It is stronger than other experimental resins. The triangular spiral packing is made of metal wire, and its shape is similar to that of a spring, also known as the triangular spring filler. The difference between it and the spring is that each circle wound is not a circle but a triangle, and the triangle between the circles is staggered at a suitable angle, therefore, it is a polygonal shape from the direction of the end face, this packing has higher efficiency, but compared with the annular filler, the resistance is slightly larger, and it is mainly used in laboratories.
