Wish I had more examples (seems more early than late cars) appears there is a pattern to method used to attach them
Posted each below for your, review, use and application if you choose to. Stayed with Mach I's so that the confusion of the longer/wider seal would not confuse the discussion and I also had more Mach's with AC and the seal
0T05R1066xx - Screws
0T05R1082xx - Screws
0T05R1100xx - Screws
0T05H1199xx - Staples
0T05H119xxx - Staples
0T05R1453xx - Staples