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