In-Sink-Erator brand.

The instructions on the package do not mention plumber's putty (what the heck is plumber's putty, anyway? Is it anything like naval jelly?), but the video on In-Sink-Erator's website suggests using plumber's putty.

The instructions seem pretty straightforward. Any tips or anything they might have forgotten to mention that I need to know?

And yes - before you guys remind to turn off the power at the circuit box, I already know that part.

Wish me luck~