Compatible with various espresso machines - 54mm silicone steam ring compatible with breville espresso machines 870/878/880/860/840/810/450/500/ Sage 500/810/870/875/878/880 Safe alternatives-Silicone Gasket is made of food grade silicone, BPA free, You don't have to worry about chemicals leaching into your coffee. Set includes - 3pcs for breville replacement gasket, easy to remove and install, more heat resistant and longer lasting than ordinary rubber pads The soft silicone vapor ring fits easily into the grooves, creating a tight, secure fit to ensure no moisture escapes. Forms a tight, firm fit to ensure no moisture escapes The No BPA grouphead gasket replacement part can handle a range from as low as -65°F / 54°C to as high as 450°F / 230°C. You can use it for long periods of time. Included: 3PCS 54mm silicone steam ring.The No BPA grouphead gasket.Compatible with breville espresso machines 870/878/880/860/840/810/450/500/ Sage 500/810/870/875/878/880