About this 3D model
Saw there weren't many printable options for the PG7 gland used for CAN BUS. I instantly though of sprongos. You have to run a blade to separate the helix cut. It's pretty shallow. You might want to put a dab of super glue at the beginning and end of the helixes it could be prone to cracking just at those points. Flexible but not too flexible. Thanks to @ makeanything for the springo idea.