R-017 Square O-Ring (ID: 11/16", CS 1/16", OD 13/16"), 240PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
R-115 Square O-Ring (ID: 11/16", CS 3/32", OD 7/8") (1 Square O-Ring) The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
Square O-Ring (ID:9 mm, CS:1.5 mm, OD:12 mm), 12PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..