I recently replace my screws for this chrome as well. I removed it to polish the chrome and clean the paint on the soft top lid. My chrome did have a rubber strip below it. I looked at my 230SL parts book and I believe it shows this part, but I can't sort out the descriptions of all the trim, moulding, and gaskets listed to know the part number. Also, there are rubber washers (2 types) that go with the special bolts to keep water from getting into the lid.
Rodd
Powell, Ohio, USA
1966 230SL, Euro, Auto, Leather, both tops
1994 E420