Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5417486.

Remix of https://www.thingiverse.com/thing:2838281 to be assembled with a push-to-connect fitting (PC4-M10) and PFTE tube (OD=4mm / ID=2mm).

Fitting: https://www.amazon.com/gp/product/B07ZCNB1L8

A PFTE tube is expected to be connected to the fitting all the time, so I removed the cap. The internal cavity is designed so that the tube would be center-aligned with the filament being inserted from inside the dry box. The cavity also has enough clearance for the tube to extend beyond the fitting so that the filament would not come in direct contact with the fitting. The flat side of the grommet has a tapered hole for an easy filament insertion.