Danco 1-3/4 In. Polyethylene Tailpiece Sink Strainer Washer

Washer used between the shank of the sink strainer and the lip of the tailpiece with the 1-1/2" coupling nut making the connection. Polyethylene with flange for 1-1/2" slip-joint nuts. 1-3/4" O.D. x 1-9/32" I.D. 9/30" thick. 1 per UPC coded bag.