820C OMT o-ring specs

Anyone know the o-ring specs for 820C with OMT?  In need of a couple and don't want to just try to match diameter. 

Support doesn't know because it's part of a kit :(

Hi, did you find anything o-ring/xxx-ring for ptp820 ?

for my 11G

I thought the caps or gland needed an OD30xCS2.5 O-ring. I bought several different ones, and the OD30 seems to be the best.

But do find the rings for the OMT? It’s not O-ring in my OMT. There’s also a ring for the antenna; it looks very similar to the OMT ring.

Thanks.

Perhaps you also encountered rowers from India.

I wouldn’t be surprised if they offered to sell you new OMTs instead of replacing the rubber bands.

I took a photo of my OMT rubber bands, but I can’t figure out what they’re named.

i can buy the Q-ring or D-ring for $2-3, a pack of 50 rubber bands.

but it’s a triangle and I don’t know yet what they could be named.

Click to see a photo of my OMT rings