Edwards Ultragrade 19 Oil is suitable for Edwards RV3, RV5, RV8, RV12, E2M18 & E2M28 Vacuum Pumps. They are also compatible with Alcatel Adixen C1, Busch R5 (40m^3/hr), Rietschle V Series (40m^3/hr), Leybold Trivac, Pfeiffer DUO Line, Kurt J Lesker and Kinney KVA12-40 Vacuum Pumps.