If you notice that there's water leaking from the area above the portafilter, known as the group head, then your gasket is probably to blame.When changed your coffee cream will improve as you will have achieved the maximum extraction pressure of 9 bars. (The pressure will be constant as the filter basket has a full seal.)
You should change your gaskets every 12 months.
The longer you leave it the more difficult it will be to remove them.The group seals become brittle over time due heat from the portafilter and with age.When removing the old one it will probably fall apart as it will be so brittle.
Size: Ø 73x57x8mm
Fits the following Lelit E61 group machines:-
- Lelit PL62 Mara
- Lelit PL162T Bianca