The edging shown in the Scamp
link is not the door seal. It is used to provide a clean edge aground the door opening between the fiberglass and the Rinoskin insulation material.
I personally use a white open cell foam, adhesive backed weather stripping. I believe the dimensions are 3/4" wide x 1/2" thick. You can get different thicknesses depending on your door gaps.
This weather stripping can be picked up at Home Depot or the like and is used for home window weather stripping.
I like the open cell foam because it crushes flat with little effort and does not make the door too difficult to close. But it does keep out road dust and bugs!
Last time I changed the weather stripping was over 5 years ago and it is still going strong (it has yellowed a little but otherwise still holding up).