A liquid ring vacuum pump is simple to operate and is used in a number of applications across various industries. A liquid ring pump works together with a sealant Vakuum Pumpe required in its procedure. This liquid could be water, essential oil or any other solvent which is certainly 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, sometimes known as “blank off” vacuum, of 0.010 Torr (10 microns, 1 x 10-2 Torr or 0.0133 mbar).