Cafelat's espresso gasket for E61 groups are made from non-toxic food grade FDA silicone. This makes it better than rubber gaskets, since silicone doesn't have any smell or taste and are easy to change in and out. Cafelat spent months testing the espresso maker gasket so it can retain the strength of a rubber gasket but can also create a good seal effortlessly.
NOTE: Poor water quality will destroy your espresso machine. Learn More