Faema Silicone Group Gasket, 8.75 mm E61 The thicker of the two silicone gasket options for E61 groups, made for worn groups or portafilters that lock in too far to the right with a standard-thickness gasket. SPECIFICATIONS 73 x 57 x 8.75 mm Material: silicone "REPA" and dimension markings face up when installing COMPATIBILITY Fits: all variations of the E61 group INSTALLATION Remove the basket from the portafilter before installing to avoid tearing the silicone; don't force it with a sharp tool. PRO TIPS If your portafilter has started locking in noticeably past 6 o'clock, reach for this 8.75 mm thick version rather than the standard 8 mm, it compensates for a worn group without machining or shimming. Silicone doesn't need to be cranked in tight like EPDM rubber, over-tightening won't improve the seal and just wears the group faster. Use a food-safe silicone lubricant such as food-safe white grease, never petroleum-based grease, which degrades silicone over time. When installing, never push the gasket in with a sharp screwdriver, it will tear; use the portafilter itself with the basket removed.