The Busch MM Series pump is a compact, newly designed version of the Busch Mink pressure or vacuum pump. It is designed for all applications where dust particles may be present. Vacuum is provided by two noncontacting, claw-type rotors in an oil-free chamber. It is single stage and reaches an end vacuum of 37.5 torr. The noncontacting design results in no wear in the pumping chamber, and the high volumetric efficiency and no friction-pumping chamber creates electric power savings.