Kenmore 417.81042000 Electric dryer has loud squealing sound

My dryer of the same model number had the same issue. The teflon/plastic wear points are worn out or have fallen off. They are about $22.00 plus shipping at the site below. Disconnect the power, lift (with force) the top off at the front of the dryer and you will have access to remove and replace.

Felt glide assembly - Upper felt seal with three glides attached. Comes with adhesive.
Part Number: AP2150497 made by FRIGIDAIRE

www.appliancepartspros.com/modelsearch_model.aspx?part_id=2150497&&model_id=301211

Do not believe that that will be necessary, if you have rollers in the front they are probably the source of you squeal. I replaced my rollers with nylon skids and fixed my problem and thus far they have lasted longer than the rollers.