Bonding Agent for Aluminum - Who did I talk to at Indy?

[sparkycuda]

Guess I overloaded my brain by trying to meet everyone I could at Indy this year. So, who did I talk to about the bonding agent used on their aluminum dump trailer? Similiar to silicone, applied with a standard caulking gun, exposed material was a silvery-color easily removed, and cleaned up with water. I think it had a number like "9300" in it's name, but not sure now. Would appreciate a shout-back.

Thanks!

Ken