Plutus Syn Vacuum Pump Oils are formulated from synthetic base stocks and specially selected additives designed to achieve premium performance that is suitable for each kind of mechanical vacuum pump, particularly in the areas of good oil-water separation property, resistance to wear and oxidized stability, high viscosity index and long life service. Plutus Syn Vacuum Pump Oils have very narrow boiling spread and low volatility. As well as very low saturated steam pressure under the high temperature that guaranteed to obtain the high vacuum pressure.