Amazon.com: 54mm Silicone Steam Ring – Durable, No BPA Grouphead Gasket Replacement Part – Compatible with Breville Espresso Machine 870/878/880/860/840/810/450/500/ Sage 500/810/870/875/878/880: Home & Kitchen
54mm Silicone Steam Ring | Sage (FI)
54mm Silicone Steam Ring – Higher Quality Upgrade Grouphead Gasket – R – MacMaxe
Silicone Seal Gasket | Silicone Steam Ring | Grouphead 54mm | Breville Seal - 54mm Silicone - Aliexpress
Caffewerks (2 Pack) 54mm Silicone Steam Ring - Compatible with Breville 800 Series Machines Breville BES870XL, BES860XL Barista Express, BES840 Infuser Espresso Machine, Duo-Temp BES810BSS Gasket
Amazon.com: 54mm Silicone Steam Ring Espresso Machine Replacement Parts Compatible with Breville/Sage Espresso Machine Replacement 878/870/860/840/810/500/450/875/880 Grouphead Gasket Seal(2 Pack): Home & Kitchen