This is the original grey rubber seal for all Cabriolets, 1950 thru 1965. We make this part in one long piece to be cut in three sections upon installation. The door window closes against this seal. When properly installed, the seal should give a good weather-tight closure.
This seal in inserted in the aluminum rails, see NLA 542 950 00
Note: Although Porsche factory documentation shows this as grey rubber, some restorers prefer to install a version made of the usual back rubber.
For the Black Side Wind, seal, see NLA 542 095 20.