Filter holder gasket LF L1186077

A filter holder gasket creates the seal between the portafilter and the group head of an espresso machine. The ring sits in the groove of the portafilter basket, pressing against the metal surface of the group head when the portafilter is locked in place. This seal prevents water from leaking around the edges during extraction, ensuring the full pressure of the pump drives the water through the coffee puck rather than escaping as spray or drips.

To install the gasket, the operator removes the old one from the portafilter basket, cleans the groove of any coffee residue or scale, then presses the new gasket into place. The portafilter is then reattached to the machine and tested with a blank shot to confirm the seal holds without leaks. Over time, the gasket compresses and loses its elasticity, so it is replaced as part of routine maintenance to maintain consistent extraction pressure.

The gasket is a flat ring with an outer diameter of 60.5 mm, an inner diameter of 48.5 mm and a thickness of 5 mm. These dimensions match the groove in the portafilter basket of the specified Cimbali models, ensuring a precise fit without distortion or gaps.

Made from food-grade rubber, the gasket withstands the heat and pressure of espresso extraction while remaining flexible enough to form a reliable seal. The material is chosen for its resistance to oils and acids present in coffee, which can degrade lesser rubbers over time.

This gasket fits Cimbali espresso machines in the M20, M25, M27, M28, M29, M30, M31, M32 and Micro ranges, making it a direct replacement for the original part.

In the catalogue, the gasket is listed under spare parts for espresso machines, specifically in the section for portafilter components.