The Delonghi AS00005478 Espresso Machine O-Ring (D=3), a vital component designed to ensure the seamless operation of your beloved espresso machine. Crafted with precision and quality in mind, this O-Ring guarantees a perfect fit with a diameter of 3. Engineered by Delonghi, a renowned brand in the world of coffee appliances, this replacement part promises durability and reliability. Keep your espresso machine running smoothly and enjoy consistently delicious brews with the Delonghi AS00005478 Espresso Machine O-Ring (D=3).