R-011 Square O-Ring (ID: 5/16", CS 1/16", OD 7/16"), 4PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
R-167 Square O-Ring (ID: 7", CS 3/32", OD 7 3/16"), 12PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
Square O-Ring (ID:11 mm, CS:1 mm, OD:13 mm) (1 Square O-Ring) The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
R-215 Square O-Ring (ID: 1 1/16", CS 1/8", OD 1 5/16"), 16PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces.