Yes, automotive seam sealer sticks better and flexes more so it doesn't
detach or crack. Those panels do flex, and the seam opens and closes
slightly. And, it's sandable and paintable.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Mike S
Sent: Wednesday, November 21, 2012 8:36 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: seam sealer

On 11/21/2012 10:34 AM, ed donnen wrote:
> With all this seam rust conversation, what exactly is seam sealer?
> Exactly??  Why can't I use a marine grade silicone sealer, or any kind of
> non-water based sealant from a tube and have the same effect?
> ed- 91 DoKa- with seam rust, or so it seems

Silicone RTV normally doesn't accept paint well. You can get a cartridge
of seam sealer specifically made for autobody use for <$20 (3M Ultrapro
8300 urethane or All-Around 8300), so why are you thinking about fooling
around with something meant for another purpose?