Tony M Braintree , MA November 18, 2017 Appliance: Frigidaire Dryer AEQ6700FS0 Frigidaire Dryer Aeq6700fs0: Dryer was putting black marks on clothes. How to replace Lower Felt Seal. Replaced glides and upper and lower felt seal Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes