Up date - I think I was over thinking this.
I found some on-line pics of SS 16's and got close up's of the windshields, and see that they are likely just using maybe 1/4" x 3/4" solid foam w/adhesive back.
This windshield is new to me/the boat so I haven't/hadn't seen exactly what was there.
Thanks Scott, but those look like the seal between the glass and frame, I'm looking for the seal between the frame and console. I didn't see one in that list that was the obvious choice.
When I switched out my original plexi for a walk-thru, I used the sticky-back foam tape. It seems to work OK. If you go this way, get the densest you can find. It compresses a lot.