Rancilio Silicone Group Gasket, 8.5 mm A silicone group gasket fitting all Rancilio models, with one important exception: we don't recommend it for the Silvia. SPECIFICATIONS 74 x 57.5 x 8.5 mm Material: silicone Stamped logo side faces up when installing COMPATIBILITY Fits: all Rancilio models NOT recommended for: the Rancilio Silvia, we've had repeated reports that the softer silicone material requires excessive force to seat the portafilter on this model INSTALLATION Remove the basket from the portafilter before installing to avoid tearing the silicone; don't force it with a sharp tool. PRO TIPS Own a Silvia? Stick with a standard EPDM rubber gasket instead of this silicone version, the softer material fights back against the Silvia's tighter tolerances and makes seating the portafilter unnecessarily hard. Use a food-safe silicone lubricant such as food-safe white grease, never petroleum-based grease. When installing, never push it in with a sharp screwdriver, it will tear; use the portafilter itself with the basket removed.