Abstract: An apparatus for filling dispenser containers with a liquid or pasty product, having a filling station with a filling tube, which is inserted into the dispensing container by movement of the filling tube with respect to the dispensing container and a prechamber containing a filling product connected to the filling tube, characterized in that a telescopic tube coaxially reciprocatable with respect to the filling tube is provided in the latter, the upper end of tube being connected to the prechamber and being fixed to a piston which is sealingly guided with respect to filling tube, the lower end of which is movable through an opening in a bottom plate closing the lower end of the filling tube and that a restoring spring is provided between the piston and the bottom plate whose spring tension is less than the sum of the filling pressure of the filling product and frictional forces of telescopic tube.