""In Good Contact with the Liquids""
The liquids to be pumped are abrasive, but they do not leave any deposits. Dry running of the pump must not cause any problems. You are looking for a general purpose pump without a mechanical seal in the liquid section. The O-ring material FKM is not resistant to the liquids to be pumped.

The inner tube supports the pump shaft, which is lubricated by the liquid. The level of the liquid in the inner tube always corresponds to that in the drum or container.