You can order the seals from the
website. The part number for the felt seal on that model of dryer is 280114. If you are replacing both seals then you will need to order 2 of that part number 280114. Be sure that you
unplug the dryer
before accessing internal components. Here is a link for a video that shows how to replace those felt seals:
Video: Dryer Drum Seal Replacement
NOTE: That video recommends that you allow the seals only 20 minutes to dry. I recommend that you allow the seals to dry for 8 hours before reassembling the dryer
The failure of those seals in 6 years could be normal depending on the use, level of loading and the environment where the dryer is used. It is somewhat premature based on a dryer that is used only 8 times a week, filled with medium loads and in a relatively dry, climate controlled laundry room.
I hope that this information helps. If you need more assistance, reply with additional details.