A liquid ring vacuum pump is easy to operate and can be used in several applications Vakuum Pumpe across various industries. A liquid band pump works with a sealant necessary in its operation. This liquid can be water, oil or any other solvent which can be 
rotated by an impeller within the casing of the pump.
The typical oil used in a sizable rotary piston vacuum pump is a mineral oil that has been through a distillation process to reduce its vapor pressure. These vacuum pumps have an ultimate vacuum, occasionally called “blank off” vacuum, of 0.010 Torr (10 microns, 1 x 10-2 Torr or 0.0133 mbar).