(PeteCresswell) wrote:
I've always used AquaSeal and usually with a little Cotol to speed it up.

But every so often I have a partial tube of GE's clear silicone adhesive laying
around and I'm wondering if anybody's used the stuff to do a neck seal.

Seems like a pretty good adhesive for other purposes.

Flexibility? Adhesion to rubber?

DON'T use silicone! It creates a very weak bond and leaves behind a
residue that makes it very difficult to get anything else to bond to the
surface. Either use Aquaseal or a glue made specifically for bonding
latex seals, like the one sold by OS Systems.