Just a minor point guys. The force applied to the penis by the weight induced vaccum, P, is not the crosssection glans area x P as shown in the diagrams.
The force applied to the penis by P is the cross sectional area of the penis, as it enters/exits the vacuum cup, x P.
Since the hanger is anchored to the shaft, the weight would be supported by the full cross sectional area.
You’d probably need to experiment with different flange widths to find one that provides the desired balance of pull on the shaft/head and on the hanger itself. For example, imagine a flange 2 feet wide. You wouldn’t need much vacuum at all, but almost all the load would be applied to the hanger. Only a tiny percentage would be on the head. Might as well just tie on a cord and forget the vacuum tube.
However, if the shaft/head area is (guessing 1” diameter) .79 in^2 and the flange area (based on a 1.75” diameter) 1.6 in^2, 2/3 of the weight should be supported by the hanger, with the head taking the remaining 1/3.
The properties of the blue collar are critical, I think.
Or, the flange could be hard plastic. There are several ways of connecting the tube to the flange. Threads - screw the tube on. Or use latches and a gasket.
I don’t see how a compression hanger would work with this arrangement, however. Were you thinking of including one in this version?