Breville 54mm Group Head Seal. Made from food grade FDA silicone. Most aftermarket seals sold online use a dense, pure white silicone that can be too tight for Breville machines — causing poor fit or difficulty inserting the group head. Our upgraded seal is different: ✔️ Same look and feel as the original Breville® seal ✔️ Made from the same soft, heat-resistant silicone ✔️ Provides a snug, reliable fit without excessive force Fits all Breville Sage Espresso machines: BES450 – Bambino BES500 – Bambino Plus BES810 – Duo-Temp Pro BES840 – Infuser BES860 – original Barista Express BES870 / BES875 – Barista Express variants BES876 – Barista Express Impress BES878 – Barista Pro BES880 / BES881 – Barista Touch & Barista Touch Impress