Danco Tailpiece Washer is a durable washer designed to be used between the shank of the sink strainer and the lip of the tailpiece, secured with a 1-1/2" coupling nut to ensure a reliable connection. Made from polyethylene, this washer features a flange specifically crafted for 1-1/2" slip-joint nuts, providing a secure fit. It measures 1-3/4" in outside diameter, 1-9/32" in inside diameter, and has a thickness of 9/30". Each washer is individually packaged in a UPC coded bag for convenience and easy identification. Model Number: 36622B