Sold by the quart (32 ounces), this high performance oil is easy to replace and ensures a long vacuum pump life and an excellent vacuum. The VacMaster® Chamber Vacuum Pump Oil is a non-detergent synthetic blend specially formulated to extend the life of your vacuum packaging chamber machine. Replacing with new oil is important to keep your machine running smoothly. For use with VacMaster Chamber Sealers with an oil pump: VP215, VP320, VP321, VP325, VP330, VP540 and VP545.