54mm Silicone Steam Ring – Higher Quality Upgrade Grouphead Gasket – R – MacMaxe
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
STOLLAR/SAGE/BREVILLE GROUPHEAD GASKET STEAM RING 54 mm SP0001474 | eBay
Breville – 54Mm Steam Ring [Pack Of 2] Sp0001474 – Anthony's Espresso Equipment Inc.
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