This is a sealing for the top plastic cupola of the cr-200b printer, it should improof
chamber tempreture.
The final version is made of TPU and provide a longhole for cable+bowden.
Please be carefull by using this kind of sealing, make sure you motors are not overheating!
(you can improof motor temperature by adjust Vref+passive cooling)
The author hasn't provided the model origin yet.