Did the clear threads break on your DC19 bin? (see pic)
This part replaces the grey plastic and keeps the system air tight.
NOTE: When emptying the bin, you must remove and shake out the rubber/printed part each time. The "fine particulates" are now stored in the 3D print.
there must not be an air gap between the rubber seal and the large cone of the vacuum. If there is, use some rubber/foam to push the 3d print "up"
Print 100% infil