The Whirlpool 8201809 refrigerator gasket is an essential component that keeps your refrigerator running smoothly and your food fresh. The refrigerator door's interior is lined with a rubber seal that forms a tight closure to keep cold air within.By doing this, warm air cannot enter the refrigerator and the device must work harder to maintain the right temperature.. Food spoilage, increased energy costs, and even ice building within the refrigerator can all be caused by a worn-out or cracked gasket. The Whirlpool 8201809 gasket is rather simple to repair when needed because it is composed of a sturdy material that can survive regular use. Replace a worn-out gasket to restore your refrigerator's performance and maintain optimal food preservation.