Since its introduction to the market in 1995, numerous mass transfer columns have been packed with Raschig Super-Rings in various chemical process, petrochemical, refining, and environmental applications. To support these applications, the Raschig Super-Ring No. 2 was tested at the Fractionation Research Inc. (FRI) test facility at the end of 1998. The purpose of this paper is to discuss the FRI experimental results. The tests verified that the Raschig Super-Ring No. 2 provides exceptional low pressure drop, high capacities, and excellent mass transfer efficiency. Special attention is given to a comparison of the test results with other modem and standard random packings as well as to structured packings. The comparison shows that a modem random packing design has mass transfer efficiency advantages compared to structured packings, if the same specific surface area is taken as the comparison basis. Industrial applications are shown where Raschig Super-Ring's have been used successfully. New column design is explained as well as revamp situations.