About this item Package Contents: The set includes 2 pieces of 54mm silicone steam sealing rings, one for replacement and one as a spare. It is highly suitable for both home kitchens and coffee shops. Compatible Models: The 54mm silicone steam ring is suitable for Breville 870/878/880/860/840/810/450/500 models and Sage 500/810/870/875/878/880 models of espresso machines. Long-Lasting Material: Compared with ordinary rubber gaskets, our steam ring is made of quality silicone, which can withstand higher temperatures. After replacement and installation, it can serve you for a considerable period of time, reducing the frequency of replacement. Strong Sealing Performance: The silicone steam ring is soft and elastic, and can be easily embedded into the groove to form a tightly fitting sealing structure, effectively preventing water vapor leakage. Temperature Resistance: The food-grade silicone gasket replacement part can maintain stable performance within the temperature range of -65°F to 450°F (-54°C to 230°C). It is easy to clean and can be reused multiple times.