Harmonic Balancer Separated when removed - Repairable?

Hello all. I have yanked out my sons's '69 Dart /6, and we've disassembled the block. Good times!

However, when pulling the crank pulley/harmonic balancer from the crankshaft snout, the rubber ring gave way, thereby removing only the outer half of the pulley. We went ahead and used the pulley-puller tool to remove the smaller half that had stubbornly clung to the crank snout. I did first verify that the thing wasn't bolted to the crankshaft. Sure enough, it's just a press-fit design.

But now I'm looking on-line at new replacements and they are pushing $200 (!)

I'm wondering if I can't just use my shop press to push the thing back together as one part. Maybe with some black RTV silicone carefully applied to each side of the rubber ring to ensure it stays in place. The rubber ring is in okay shape to reuse, it seems.

Problem: I didn't index the two halves so I don't know if there's a certain orientation that the two pieces mated.

I've uploaded a photo; please have a look.

On the back of the outer half of the pulley, there is an arc machined out of it (which I've outlined in red). The inner section has the crank snout key outlined in yellow. Anyone out there know the orientation of the two, when these two halves are assembled? (or willing to go peek at their motor?)

Thanks for your help!