This part is the replacement rear tub gasket for your washer. It is made of black plastic and is approximately 3-1/4 inches in diameter. The rear tub gasket forms a watertight seal between the rear tub and the drive shaft. If the gasket is worn or damaged, it may not be able to create this seal, and you may experience a water leak from your washer. Be sure to disconnect the washer from the water and power sources before you begin this repair. This is an OEM part sourced directly from the manufacturer and it is sold individually.