Raschig ring is a form of random packing and is used in commercial fractional distillation columns to reduce pressure loss (versus using trays), while maintaining good efficiency and economy. Dohntec Raschig ring packing is proven in a wide range of mass transfer applications. The Dohntec Raschig ring structure provides one of the largest surface areas among tower packing options and handles heavy loading, process upsets and temperature shocks. They are available in variable sizes such as (mm): 6,10,15,25,35, 40,50,80,100,150