If you have seam rust and clean it and apply this or any other product
only to the outside, the repair will be very short lived.  Seam rust
must be worked on from the backside as well as the front.

Mike

pickle vanagon wrote:
> Has anybody used POR Patch as a seam sealer?
> http://www.imperialrestoration.com/products.php?category=8#18
>
> -Wes
>