.R-144 Square O-Ring (ID: 2 1/2", CS 3/32", OD 2 11/16"), 6PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces.
R-218 Square O-Ring (ID: 1 1/4", CS 1/8", OD 1 1/2"), 2PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
.R-153 Square O-Ring (ID: 3 1/2", CS 3/32", OD 3 11/16"), 60PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces.
R-138 Square O-Ring (ID: 2 1/8", CS 3/32", OD 2 5/16"), 8PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
.R-429 Square O-Ring (ID: 5", CS 1/4", OD 5 1/2"), 60PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces.