>Never, ever re-use a window seal.  Seems no matter how much silicone or
>other sealing agent is used in the installation, that window seal will
>always leak, especially windshield seals.  Having made window seals for
>Bugs and Buses since 1976, I learned this the hard way when the old/used
>seal looked in good shape to re-use.
>

I've had the seal reused on several different windshield replacements, and
they have NEVER leaked.  I guess some are luckier than others.

James