Square O-Ring (ID:14 mm, CS:2 mm, OD:18 mm), 60PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
R-354 Square O-Ring (ID: 5 1/8", CS 3/16", OD 5 1/2"), 8PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
R-374 Square O-Ring (ID: 9 1/4", CS 3/16", OD 9 5/8"), 8PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces..
.R-239 Square O-Ring (ID: 3 5/8", CS 1/8", OD 3 7/8"), 90PK The o ring is placed into a groove to secure them in place, and then compressed between two surfaces.