This is the seal I purchased for my 1976 Tradewind. It was a match to the original and fits and seals well.
I had the same trouble as you finding photos of the product before and after install because I had some question about the orientation. I took some photos during the process so hopefully these will help, paired with the link above. The first photo shows the installation of the screen door seal but should give you some idea of the profile of the main door seal.