This food grade washer/gasket seals the connection between the tailpiece and the faucet shank.
Please note: I will closed on Saturday the 5-Sep-26. For anyone looking for local pickup, I will be able to accomodate pickups weekday evenings this week, just leave a comment when you place the order and let me now when you'd like to drop out to pickup. Orders requiring shipping will still ship out on Monday as usual. Sorry for any inconvenience