Airtight Filament Container - PTFE Tube Fitting

thingiverse

This is a fitting for the Rubbermaid 21-Cup airtight storage bin that allows 1.75 mm 3D printer filament to pass through into PTFE tube without being exposed to air. It requires an M12 hole to be drilled into the container and the nut and bolt portions screw together through the hole to seal against the container. The exterior half also has 3 caps that can be used to seal the other end of the PTFE tube when not in use. Links: <a target="_blank" href="https://www.amazon.com/gp/product/B00BEUDWIC/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00BEUDWIC&linkCode=as2&tag=jjameshodgson-20&linkId=d0f6b48f54db01092fe543c7debdc84b">Rubbermaid 1840750 21-Cup Modular Dry Food Storage Zylar Container</a><img src="//ir-na.amazon-adsystem.com/e/ir?t=jjameshodgson-20&l=am2&o=1&a=B00BEUDWIC" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /> EDIT: Added a version of the nut without the caps.