Reviving a somewhat dated thread, do you guys know the correct size for the "V-Rings" on the CCM Ram

Here is a picture, I cannot get this to seal:
http://imgur.com/a/a7Yz9

the 2 v-rings to the left came with the Ram and are torn a bit, the 2 o-rings to the right are BN70 010 that do not seal, should I be using a specific metric sized o-ring for this if I can't find the v-ring seals?