Key features Premium Silicone Material: This brew head seal is made of high-quality silicone, capable of withstanding extreme temperatures from -65°F to 450°F. It boasts exceptional durability and resistance to degradation, maintaining its seal even after countless brewing cycles Leak-Proof Sealing: This 8.5mm seal is specifically designed for the E61 brew head, creating a reliable watertight seal between the portafilter and the brew head to prevent steam and pressure leakage during extraction. Precise dimensional design ensures optimal compression, guaranteeing consistent espresso quality while preventing leaks that could affect extraction and machine efficiency Easy Installation and Durable Performance: Compared to traditional rubber seals, the flexible silicone material makes disassembly and installation easier, allowing for effortless maintenance by both professional baristas and home coffee enthusiasts. Its superior heat resistance and non-stick properties prevent performance degradation and buildup, extending its lifespan and maintaining consistent performance Compatible with E61 Espresso Machines: Perfectly compatible with the Faema E61 and other modern E61 brew head espresso machines that require an 8.5mm seal. For coffee shops, home baristas, and espresso enthusiasts, this replacement part is an essential maintenance tool. It restores or improves the sealing performance of your coffee machine for optimal extraction Precise Dimensions and Complete Specifications: Each sealing ring has an outer diameter of 73 mm, an inner diameter of 57-58 mm, and a thickness of 8.5 mm, ensuring perfect compatibility with standard E61 brew heads. The package includes two bright blue silicone sealing rings, perfect for immediate replacement or as spares for future maintenance This two-pack of blue E61 silicone brew head seals is the ideal replacement for your espresso machine, ensuring optimal sealing performance at all times. Made from premium food-grade silicone, these 8.5mm seals withstand temperatures from -65°F to 450°F and have undergone countless brew cycle tests to ensure durability and maintain the quality of your espresso. Their precisely designed dimensions—73mm outer diameter and 57-58mm inner diameter—create a reliable watertight seal between the portafilter and brew head, preventing the loss of steam and pressure during extraction and ensuring a consistent espresso with perfect crema. Unlike traditional rubber seals that age and stick over time, this flexible silicone material makes it easy to remove and install, facilitating routine maintenance for professional baristas and home coffee enthusiasts alike. The set includes two bright blue seals, perfect for immediate replacement or as spares for future maintenance. Guarantee consistent espresso quality while preventing leaks that could affect extraction and machine efficiency. Free shipping included. 30-day hassle-free returns.