1992 park avenue PCV valve O-ring

[Pitbullbuick]

I was wondering if the 1992 non supercharged park avenue has an o-ring on the PCV valve. I've seen videos where people change an o-ring when changing the valve, but not my specific motor. I keep seeing a grommet listed, but it's hard to find a diagram. Does it have an o-ring and a grommet? Thank you.