If that is a clean break between the rubber surround and the cone, and the rubber is not bent and the cone is not ripped - you can pick up a cyanoacrylate-based glue (i.e. super glue), place a generous strip of it on the cone recess, and use a round weighted object that can rest on top of the rubber surround in order to press it into the recess on the cone while the glue sets for 24 hours. Read the glue descriptions at the hardware store, as there are specific glues that are formulated to work better at bonding certain agents over others.

Yes it is a clean break. Almost as if the original glue just gave out, lol. I'm glad that it's going to be an easy fix (fingers crossed), and I'm not going to have to spend an arm & a leg to buy the "special" glue, lol. Thx again for the help Mike.