Ring packing

The utility model provides a ring packing. The ring packing comprises a ring wall, an upper-layer rib groups and a lower-layer rib groups. The ring packing has the beneficial effects that a flaring is formed in one end of a large flared opening of the flared ring wall, so that the ring packing can conduct mass and heat transfer on an upper ring part and a lower ring part of the ring wall, thus the practical effective area of the mass and heat transfer is increased, and the mass and heat transfer effect of the ring packing is good; the ratio of the height of the ring wall to the diameter of the flaring of the large flared opening is 1: (3.3-3.5), so that the positive stacking probability of the ring packing is greatly increased, the gas resistance is minimal, the utilization rate of the specific area of the packing is the highest, the mass and heat transfer effect is improved, and the gas resistance is decreased; the thicknesses of the upper layer of ribs and the lower layer of ribs respectively and gradually