Yeti Chug to Cirkul Adapter

thingiverse

Mine was leaking so upon inspection, I discovered that my PLA seal (also tried in TPU) wasn't working so I made one out of TPU that was 2mm thick and slightly different dimensions so that it would sit just below the adapter but not fall in the cup (see picture 2). (I'm not sure if this method would work with PLA). When I screw the lid on, it is a nice tight seal now as the plastic compresses the TPU against the metal can. I also altered the very top where the cirkul lid screws on. If you look in picture 3, there is a tiny lip that goes around the blue gasket. The original version also leaked from here because the top of the adapter just pushed up against the plastic lip and not the gasket. I edited it in Tinkercad and just made it recessed so now it seals nicely.