Square O-Ring (ID:16 mm, CS:1 mm, OD:18 mm), 20PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
Square O-Ring (ID:25 mm, CS:3 mm, OD:31 mm), 120PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
.Square O-Ring (ID:40 mm, CS:3 mm, OD:46 mm), 36PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces.