Description: Food-grade and heat-resistant material, this seal has high elasticity and strong toughness, tear-resistant and not easy to deform, easy to remove and install, long service life. BPA free, soft and highly elastic, this seal 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. 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/1.91" (Approx.) Outdoor Diameter: 6cm/2.36" (Approx.) 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. Package Includes: 1 x Seal Ring