Door Gasket? Have I got a deal for you. I tried various closed cell foam seals on my 79 17' boler
and was not satisfied.
What did I do? Heck, I went to a pick-a-part wrecker, and got the side door rubber seal from a 94 Chrysler Minivan. (The Second design style, if you know what I mean). It works like a darn. It is black by the way. But the seal clamps onto the fiberglass body, is super soft and supple, and makes a nice tight door seal, even when your door may be slightly flimsey or warped. With the single rubber seal, I do not have anything on the door itself, just the door frame.
The cost? $3.00 each So I bought two in case I made a mistake on my installation the first time.
The cost of getting closed cell foam seals at a hardware store? approximately $14-$20, and I was never satisfied with the seal.
Now I am a proud owner of a '79 Daimler-Boler.