The stahlbus Bleeder valve often looks when mounted slightly further out of the caliper. Is it still sealed?
Since the stahlbus bleeder valve just like the original bleeder screw with cone bottom seals in the caliper should always be a few millimeters below to see the thread of the hexagon.
If it were not so and the hexagon of the valve rest on the calipe, than the cone could not seal the bottom of the seal seat of the caliper.
Picture: Extremly case of an original bleeder screw
It is therefore necessary, that the stahlbus bleeder valve do not disappear completely in the caliper.