Ceramic Raschig ring is a kind of random packing that was first developed. Its shape is simple, and its height is equal to its diameter. Large-size Raschig rings (above 100mm) are generally filled in a regular way, and Raschig rings with a size below 80mm are generally filled in random piles.

Geometric characteristic data of porcelain Raschig ring packing (random pile, wet packing)