Kendel, after quite a bit of research I found:
http://www.dannoenterprises.com/index.htmI bought their weatherstrip for sealing around my doors. Twenty five feet of part# LP 80A extrusion 'D' closed cell foam @ $1.00 per foot. It is not self-adhesive, so I used black super weatherstrip adhesive. I'm happy with it, especially the cost.
Steve