This is a small hose clamp made to connect standard 1/8" ID aquarium airline vinyl hose to a 1/8" barb fitting.
I make RC aircraft and do a lot of vacuum bagging. My normal pulls are in the range of about 22 to 24 inches of mercury and the aquarium hose works fine.
This part needs about 75% infill, 2 walls, 3 top and bottom layers. Printed with an ANET A8.