Ed,    I responded yesterday, but my response must have gone into the bit bucket somewhere. I used to buy 3M automotive seam sealer from ProFinishes (formerly Mattos) in Falls Church Virginia. I noticed it looked very similar to plain ol' exterior window caulk, which is what I used last time. I couldn't tell the difference, and neither could the seams! :-) Jeff Stewart ----- Original Message -----
> 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