Aquatica 5HD Monitor o-ring size?

Hi, I'm using aquatica 5hd monitor.

unfortunately, my monitor's connector(male) o-ring got a damage.

now I'm in diving tour, so I can't send to service or buy a maintanance o-ring kit immediately.

When I ask to local dive center, they will get the NBR o-ring(AN series) ASAP.

but I don't have an information about o-ring size.

Does anybody knows about Aquatica 5HD Monitor's connector o-ring size?

attached pic is a part of my monitor's connector.

If you have access to a pachymeter, you can make the mesurement of the diameter and the section of the oring

You need to measure the o-ring here's a guide on how to do it, you want the ID and cross section diameter to specify the o-ring.  Aquatica is likely to use imperial o-rings which may be harder to find:

https://www.theoringstore.com/store/index.php?main_page=page&id=41&chapter=6

You could also try emailing Aquatica requesting the size, they are normally quite responsive.