Aeris Atmos Elite Transmitter O-Ring Size??

[jacked_72]

I was having an issue with my computer not receiving a signal from the transmitter. Turns out that somehow I managed to change one of the numbers on the registration screen and so it would not receive. Meanwhile, I opened the battery compartment on the transmitter to check the battery. Anyway, I want to replace the transmitter's o-ring and I'm wondering if anyone knows what size it takes. I'm guessing a -016 or-017, but I'd like to make sure.

Thanks.

Jim

[jacked_72]

I stopped by ST at lunch and they said it is an -016. Just putting it here in case the question comes up in the future.