Elmo Rietschle once through oil lubricated rotary vane vacuum pump with coupling and flange to accomodate a C-face NEMA motor. This single-stage, air-cooled pump is ideal for handling a wide range of gases, including those which are extremely wet or aggressive. It features low operating temperatures, a fresh oil reservoir, low oil level shut-down switch, oil metering pump, and shaft seals to protect the bearings from contamination. An inlet filter is recommended and sold separately.