PTFE filament tube stopper

A simple stopper to for a 4mm diameter PTFE tube.  They are long - as they allow for a small length of filament to extend from the end of the tube when sealed, this makes it easier to load the filament next time it is used.

I print in colours to represent the filament in the tube - Orange - PETG, Grey - PLA ,  but I am sure you will do whatever suits your scheme.

PLA or PETG at 0.2