Here you will find our range of nitrile O-Ring Cords. O-Ring Cord is an endless extruded rubber cord which is suitable for use when a standard size O-Ring is not available for your application. O-Ring Cord allows you to create your own O-Rings to the size you require. Our Nitrile O-Ring Cord can be used in with Loctite 406 Instant adhesive for bonding the rubber ends together.