Another recommended sealant for pouches is a thinned silicone grease
such as Dow Corning high vacuum grease.

I know that people will freak out when they hear "silicone".  It
is used very sparingly and does not migrate.  I believe that Craig
Brougher is one of the advocates of this sealant.  I have used it
and never had a problem.

Spencer Chase

 [ Phil Dayson used Dow Corning 734 sealant thinned with toluol, 
 [ see http://www.mmdigest.com/archives/KWIC/S/sealing.html  and
 [ http://www.mmdigest.com/archives/Digests/199704/1997.04.12.10.html 
 [ -- Robbie