UM3 Moisture Tight Extruder Sealing

[jkoch07 0]

I have been having issues with our work UM3 and PVA being left out too long due to projects starting and going. To reduce these issues we have a Polymaker Polybox to store the PVA Filament. That box comes with a rather baldy sealed pipe/filament guide tube

 

Luckily our work has a full range of Festo, SMC, Swagelok etc parts so I have raided the bins and got a SMC 6mm PFA pneumatic pipe and screw in fittings, that i have tapped into the polybox. 

The issue is that at the extruder the plastic pipe just jambs up against, the back. Is there a model available for upgrade extruder casing to be better sealed and fit a standard pnumatic fittings? This will keep the filament dry as it goes into the Printer so would prefer something more sealed up. Do you think a bondtech upgrade would help?

 

I am an engineer so don't mind getting some CAD out but thought i would ask before reinventing the wheel. 

Is there an anti kink tubing mod for a bowden tube to prevent the PVA filament winding itself up? I am sure i have seen something like this for a creality.

 

This may sound like a random bit of question but i would rather not have to worry about unloading the PVA from the printer all the time and just leave it there for weaks safe in its dry box and sealed up path to the extruder.