The La Marzocco standard rubber group gasket is the wearable spare part responsible for providing a properly sealed portafilter while brewing espresso. For La Marzocco Home espresso machines, it is recommended to replace every 3-6 months or as needed to provide a proper seal.
Both compatible with all La Marzocco machines, we recommend for 6mm version for most of the machines. 7mm version aims for machines with tear and wear on the group head.
Original La Marzocco spare parts