4mm PTFE Tube Stopper Plug for PolyMaker PolyDryer

This Model is an improved remix of this stopper by Muse. Additionally, it incorporates an idea by @user_858754080 to add a slot that can retain the end of the filament.

It is intended for use with 4 mm PTFE tubes. PETG, ABS, or any other temperature-stable material is recommended.

Please note: Due to the filament channel that is integrated into this stopper, the rubber plug will not fully seal the container when no filament is protruding from it. I therefore recommend using this stopper on only one of the two filament access ports.