The ENERVAC Turbo Compressor Seal Oil Purifier (E865S) can effectively remove dissolved and adsorbed gases including hydrogen sulfide, which is detrimental in even trace quantities. Lighter fraction hydrocarbons are driven out, returning the oil to its original viscosity. Water is always a major contaminant, particularly in combination with other components, such as ammonia and carbon dioxide. When present in synthetic lubricants, the vacuum process removes water easily to low levels below saturation point. The Seal Oil Purifier provides mechanical separation of particulate matter down to the sub-micron range. The removal of the above prevents oxidation from taking place and assures the acid number remains within acceptable levels.