The Delonghi 5513219841 Fully Automatic Espresso Machine Tube PTFE Nut! This essential component is designed to ensure the smooth operation and longevity of your espresso machine. Crafted with precision and quality in mind, the PTFE nut guarantees a secure connection for the tube, maintaining the integrity of your machine's functionality. With this genuine Delonghi part, you can trust that your espresso machine will continue to deliver delicious brews with consistency and reliability. Upgrade your coffee experience with the Delonghi 5513219841 Fully Automatic Espresso Machine Tube PTFE Nut today!