The CM-series, manufactured by Munsch, is a magnetic drive chemical centrifugal pump used for the safe pumping of fluids posing an environmental or health hazard such as acids, alkalis, solvents and chemically contaminated fluids in the presence or in the absence of solids. Its spacer can is designed as a metal-free double-wall unit consisting of an outer shell and a separate spacer can liner. The standard construction material for the plain bearing is silicon carbide.