Hartzell governor o-ring size?

I buggered the o-ring on the back of my Hartzell prop governor while trying to get it properly clocked. It's 1/16" by about 2 3/8", but the exact size is difficult to determine from the remains.

I've got a call in to Hartzell, but would love to order one tonight if anyone knows the exact size.

Thanks,

-Tom

For the record...

For the Hartzell S-1-10 governor barrel to head O-ring

Hartzell # C-3317-035

ID 2.239"
Dia 0.070"