cylinder 0-ring

[danzigg]

just got my cylinder back from being bored to a 416 and noticed the 0-ring was gone from the bottom of the sleve .
Do i have to have it? the dealer doesn't have one in stock and i wanted to install every thing this weekend.
thanks..

[Colby@C&DRacing]

We don't use them. When we install big bore sleeves there is no longer a groove for the oring