The Delonghi 5313217701 Fully Automatic Espresso Machine Nozzle Seal O-ring, designed to ensure a perfect fit for your espresso machine. This high-quality seal measures 3.85 x 2 mm, providing a precise and secure seal for your machine's nozzle. Crafted with precision, this O-ring guarantees a tight seal to prevent any leaks or spills during the brewing process. Keep your espresso machine running smoothly and efficiently with this essential replacement part from Delonghi.