The GE1200 worked well, this new silicon was not available at the time we were using the 1200
The GE silicon we use now is far superior to the 1200 in its adhesion and sealing properties. This new silicon is the silicon specifically designed and manufactured for us for this application by GE.
The grade and type is proprietary. I don’t want what happened with the 1200 to happen with the new stuff. I did not care when it happened with the GE1200 because we already had the new application specific silicon.