Charlie asked the same thing on Yenko...
No there is no silicone, it was stripped of all original seam sealer dustless glass blasted and then rolled around on the rotisserie with epoxy coming out of every where before seam sealing.
It's the stupid 2 part beige automix seam sealer...
I was talked into coming into the 2000's and hounded to stop using "old technology".
PROBLEM is it doesn't look like the original and it doesn't tool ANYWHERE CLOSE to how the original stuff tools.
I only left it there because it is better RE weather sealing, and because it is covered by trim. everwhere it's visible I removed it and went with 3m fast & firm beige....