9 mm Silicone Group Gasket for E61 Espresso Machine

Silicone group gasket for all E61 espresso machines. This has a thickness of 9 mm, which is thicker than standard for coffee machines with E61. If you experience that the portafilter (filter arm) can be tightened further than 90 degrees, it is possible that the fasteners on either the portafilter or on top of the group are worn. You can then try switching to this group gasket. If you find that 9 mm is too much, you can try 8.5 mm first. This is made of silicone, which has a much longer durability than standard rubber.