This would've been great, but PLA is truthfully the wrong material to seal a ball. I re-printed this in TPU @ 100% infill and it worked PERFECT. Model is great, but this rating is specific to the print profile.
(Edited)
Other Issues:MODEL IS FINE - PLA does not create an air tight seal in the ball. Used TPU.
Thank you for the constructive criticism, however, the balloon, which is sealed with this plug, has been without a visible change in pressure for half a year. But it is true that TPU is a much more suitable material ;-)