Hi this is a cover for the pressure sensor. It is not a watertight compartment, so technically you can dive with as is, however we recommend covering it. Caveat, this is not a part that is sold independently, however I checked with our service department and he has one he will just send to you as a service. If you PM me your address, we'll get it in the mail.
All the best,
Zak
---------- Post added December 11th, 2014 at 03:40 PM ----------
I guess you already emailed our customer / tech support. They are going to help you.
Best,