Yes, it seals oil. No real pressure, but accumulating splash off the rotor. Will leak if it doesn't seal. I reused all the o-rings on my cover, just put a very light coating of sealer on the perimeter o-ring gasket.ok thank you. It doesnt actually seal any oil does it? the oil should be within the actual stator housing right? so i assume this outer seal is just for a bit of air pressure retainment?
I'm wondering if it might be possible to slide the stator case out far enough to install a grommet? I'm thinking it might, but don't remember if there's any interference getting all the bolts out. Need to hobble out and look at my bike, it hasn't moved this summer.