the lid has a plastic ring it screws into. The plastic ring is screwed down to the connical vessel. I may take the ring off and replace what looks like drywall screws with some stainless steel bolt/nut. I haven't yet fermented in it yet so for the first time i will just twist the lid on a little and see if it leaks enough to release pressure during fermentation.
I know some of the guys here are less concerned due to the positive pressure from fermentation but, my team isn't called the A**l Retentive Brewers Guild for nothing. If I go this route, I'll airlock it.