In a message dated 1/6/06 10:44:33 PM Eastern Standard Time, 
robertmstewart@MAC.COM writes:

> They have silicone which lasts for over 20 years ( I saw something from GE
> that said it lasted 45years!) that can be painted and remains flexible. I
> thought maybe since my van is silver I could silver Silicone to seal in the
> seam after the POR15. I know it�s a weird and wacky idea.
> 
> 

trust me.. you cannot paint automotive finishes over silicone..  BTDT  it 
aint gonna work.  use seam sealer.    and remember - the rust/water comes from 
BEHIND the seam. so making the outside pretty without taking care of the root of 
the problem is a waste of time..

robert, search the archives for "seam rust"   you'll find tons of info in 
there..

chris