Thanks Chuck. I checked it out as you suggested and found that the product is called either "Insert Molding" or "Screw cover molding" and is made in ruber or vinyl. Once I had determined this it was not hard to find the product. rvdiscountsuppliers.com had the product in the quantities I needed and their shipping and handling charges were much more reasonable than many I have run across.
I'm still looking for an over door rain cap though. If you happen to come across one in your browsings please let me know where you found it.
Sincerely
Ralph (DolphinModGuy)