ORDER ONE FOR EACH CANISTER YOU HAVE! 1 means one O-ring.
After 6 years, you need to replace the canister O-rings for your countertop kitchen filter.
SOLD INDIVIDUALLY. THIS ITEM IS FOR ONE O-RING.
GET ONE FOR EACH CANISTER IN YOUR SYSTEM. SELECT 1 IF YOU HAVE A SINGLE CANISTER, 3 IF YOU HAVE A 3-CANISTER FILTER.