It's great to see so many people being inspired to help. Being able to 3D print these with silicone rubber should improve the mask's seal as well as its durability. It should also be able to survive numerous sterilization attempts.
Thanks! I really appreciate the support! The snorkel mask already has a rubber fitting where the snorkel attachment gets attached to. So this is really just a easy plug and play solution. Though I think a rubber ring around the outside would be an excellent idea for an even better seal. Thanks for the feedback!