Do we know what the factory window sealant is?

[TheHubbardBus]

I'm guessing there isn't just 'one' window sealant, but I've read enough descriptions here of what appears to be the same thing that I'm sure someone will know what I'm talking about.


Whatever is sealing our windows now is grey, sticks like gum on steroids, is still flexible on a 2003 model year bus, and reseals pretty much perfectly every time we've removed & reinstalled the windows. It's magical.


I want to use the exact same stuff when we finally reinstall the windows for good, after cleaning up the channels/windows completely & repainting. Does anyone know exactly what this is?


2003 IC 3800 if it matters.