Danco 36171B Faucet Aerator Washer, 1/2 in ID x 7/8 in OD Dia, 1/8 in Thick, Rubber

This Danco aerator washer fits between the end of the spout and the aerator. It provides a positive seal at the faucet spout and helps prevent faucet drips. Replacing worn-out washers will stop dripping water and will save water and money.