R-335 Square O-Ring (ID: 2 3/4", CS 3/16", OD 3 1/8") by ContractorsX
ContractorsX Square O-Rings are used to block a path which may otherwise allow a liquid or a gas to escape. The o ring is placed into a groove to secure them in place, and then compressed between two surfaces.
Features:
1) Helps to eliminate leaks in many applications, such as faucet drips at the spout
2) Nitrile rubber construction
3) Tough, flexible rubber construction
4) Dimension in SAE: ID: 2.725", CS: 0.21", OD: 3.145")