Dosing pump e.g. gear pump, for dosing liquid surface coating medium, has notch receiving sealing ring that forms static radial sealing at outer diameter of ring, where ring is sealed between outer diameter of ring and notch

摘要

The pump has boreholes that are limited in a front plate (2) and a rear plate. A gearwheel (17) is rotatably arranged in the boreholes. An elastic sealing ring (26) forms a dynamic axial sealing between a front surface of a rotating gear wheel and the front plate or rear plate of the boreholes. A notch (22) receives the sealing ring that forms a static radial sealing opposite to the notch at its outer diameter. The sealing ring is sealed between the outer diameter of the ring and the notch. The sealing ring has two ring surfaces that are perpendicular to each other.