To customers: life is full of surprises. Package Includes: 1 x Seal Ring Item Name: Seal Ring Material: Silicone Features: High Elasticity, Heat-resistant, Detachable Applicable Models: for Breville-8 Espresso Model: 870/878/880/860/840/810/450/500 for Sage-Model: 500/810/870/875/878/880 Size Details: Inner Diameter : 4.85cm Outdoor Diameter: 6cm Specifications: This seal is made of food-grade and heat-resistant material, with high elasticity and strong toughness, tear-resistant and not easily deformed, easy to remove and install, long service life. The seal is BPA-free, soft and highly elastic, and fits very easily into the grooves, creating a tight and secure seal to ensure no moisture escapes. It is made of silicone. The inner diameter of the sealing ring is 4.85cm, and the outer diameter is 6cm. It is suitable for Breville-8, and suitable for 54mm coffee machine brewing head. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. We strive for excellence. And hope you have a nice day!