Pump for gas cell system, has shaft, which has rotor section and bearing section, and has sealing device, which has internal gasket and two external gaskets formed in axial direction

摘要

The pump (1) has a shaft (2), which has a rotor section (4) and a bearing section (3). A sealing device (5) is provided, which has an internal gasket (6) and two external gaskets (7,8) formed in axial direction at a distance from each other. The sealing device is arranged in radial direction at a distance to the internal gasket by a radial clearance and between those an axially extending lengthen-variable initial tension elements are arranged.