I replaced the drum seal, the wheels supporting the drum, and the belt.
I ordered the repair kit for my model dryer which came with wheels and belt. It turns out that the belt was too short. I ended up ordering a belt listed specifically for my dryer. The person on line found the correct belt. Unfortunately, I ended up eating the cost of the belt that came in the kit because it was un returnable.
The repair was very straightforward. The belt replacement was as shown in the video with the belt that fit the dryer.