Hi guys

I'm currently working on a diver watch project. I initially wanted to put a sapphire crystal but eventually I chose to put a acrylic one. Could someone helm me find the right shape to handle 30 ATM. For instance what is the shape on a sm 300?

thanks!

 

Double dome with tension ring...

 

Hi archer. Thanks for your answer. Do you think of any generic reference. Sternkreuz, Robur, or else?

 

Plenty of options - the ones you mention and others, such as G-S for example.