Nyltite® locking and sealing rings add some specific characteristics to a fastening connection that e.g. washers do not. Typically, the Nyltite® ring will be put under the head of a screw, nut or rivet to lock the fastener in place while creating a sealing film which is highly resistant against harsh temperatures and chemical influences. When tightening the fastening connection with the Nyltite® element, the nylon ring flows inwards, away from the structurally outer rim. As a result, the connection is locked and sealed, it provides electrical insulation, thermal isolation and vibration resistance.