Oil Sealed Rotary Vane Vacuum Pump An oil-sealed rotary vane vacuum pump is a positive displacement pump is widely used for creating medium to high vacuum levels in industrial and laboratory applications. It operates with a otor eccentrically mounted inside a cylindrical housing, fitted with sliding vanes that move radially due to centrifugal force. As the rotor turns, the vanes trap and compress air or gas within the chamber, reducing its volume and expelling it through the exhaust. The use of