Plug 34.6mm

It's a quite particular model but perhaps somebody will need it eventually. 

Please consider that this is a TPU (95A) print. Didn't test any solid filaments but I highly doubt that it would work.

I also want to mention that its a rather hard plug. That works well with metal tubes. If you want a softer plug you have to reduce the wall count and/or change the infill type to archimedean chords.