Custom Fit: This group head gasket is specifically designed for Rancilio Silvia coffee machines, with an outer diameter of 7.35cm, an inner diameter of 5.8cm, and a thickness of 0.84cm for a precise fit. Food Grade Silicone Material: Made from food grade silicone, this group gasket offers precise workmanship and long-lasting durability, ensuring seamless compatibility with your coffee machine's brew head. Heat Resistant: The silicone material is resistant to heat, pressure, and wear, providing dependable and stable performance over extended periods of use in your coffee making routine. Enhanced Sealing Performance: This coffee machine gasket delivers superior sealing capabilities, restoring optimal brewing conditions so you can enjoy freshly brewed coffee with rich flavors and crema every time. Easy Removal and Replacement: Equipped with four side wall grooves, this seal gasket allows for convenient removal and replacement, eliminating concerns about the gasket being too tight or stuck. Color: As Shown Material: Silicone Package Contents: 2 x Washer Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.