The Nuova Simonelli Group Seal is a component designed to maintain sufficient pressure and prevent leaks in Nuova Simonelli espresso machines. Crafted from durable rubber, this seal ensures a precise fit between the group head and portafilter, crucial for consistently extracting flavourful espresso with a rich crema. Available in three types - 7mm, 7mm Stepped (with external cuts), and 8mm Conical - each variant caters to specific machine configurations, ensuring compatibility and effective performance. Nuova Simonelli Group Seal Features Anti-wear Properties - Resistant to wear and tear for prolonged durability. Enhanced Crema Formation - Contributes to the creation of rich, creamy crema in every espresso shot. Ease of Maintenance - Facilitates straightforward installation and replacement processes for user convenience. This Product Includes 1 x Nuova Simonelli Group Seal Specifications Material Silicone Silicone Silicone Size 7mm 7mm Stepped 8mm Conical External Ø 72mm 72mm 71mm Internal Ø 58mm 58mm 56mm Thickness 7mm 7mm 8.2mm Compatibility Nuova Simonelli Appia, Oscar, Program, Mac, Optima, Premier Nuova Simonelli Appia, Oscar, Program, Mac, Optima, Premier Nuova Simonelli Appia, Oscar Origin Country Italy Italy Italy