Tigerman
Contributor
That trail behind a divers head might not come from the tank o-ring though, it might come from the tank valve or the hose or hose o-rings on the first stage.
Regardless, yes the leak is minimal.
Ill tell you one thing though - you REALLY don't want a full out blown tank valve o-ring event when you're at depth with a less than attentive buddy, cause you'll have very little time to get alternate breathing gas supplied, even if the tanks full when it blows.
I've seen it first hand as I was "fortunate" enough to have a buddy experience just that....
Regardless, yes the leak is minimal.
Ill tell you one thing though - you REALLY don't want a full out blown tank valve o-ring event when you're at depth with a less than attentive buddy, cause you'll have very little time to get alternate breathing gas supplied, even if the tanks full when it blows.
I've seen it first hand as I was "fortunate" enough to have a buddy experience just that....