
RD40 adaptor
thingiverse
This is a RD40 adaptor for the air supply on https://www.thingiverse.com/thing:3454725The RD40 thread is a 40mm universal thread that is used in gas mask filters.I just happened to have a hose that used these threads.
Download Model from thingiverse
With this file you will be able to print RD40 adaptor with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on RD40 adaptor.