Yes ive looked on lmc and they just have the open type I currently have. Classic industries has
this which is the same as the parts store here, made by mrgasket.com but it is too large both for the hole in my valve cover and the ID is about 1" where my valve that fits into that grommet is .5" diameter.
I have also seen 'plug' type grommets which are meant to just plug off the holes. I thought about maybe drilling a hole in the bottom but i dont think that will serve the function I need too well.
Is it a safe option to delete the pcv and plug the manifold, just putting a breather in place of the grommet to let the pressure vent from the valve cover?