Maytag halo of heat, speed, reduction, pulley, and bearing
Hi, you need another pulley and bearing assembly. The bearing was permanently pressed into the pulley your bearing seized up on the steel shaft, and then destroyed the pulley. It might be possible if you have a good machinist to drill out the pulley and to make a custom bearing to make this work.
The black stringy stuff looks like an old belt to me. There was nothing like that used although it might be some of the wicking that was outside the bearing inside the pulley that you’re seeing there was no graphite of any type used with this set up. it was just a bronze bushing that was permeated with oil when it was manufactured. It was meant to be oiled occasionally every 10 or 20 years to keep it turning smoothly on the steel shaft.
I have good use pulley and shaft assembly. If you want I’ll sell you one for 50 bucks plus shipping. I just recycled DE90 a few months ago, but all of Maytag dryers use the same set up from the late 50s till the mid 70s
John L