What is a portafilter gasket
The portafilter gasket is a rubber or silicone ring located in the brew head of the coffee machine. Its job is to create a tight seal between the portafilter (handle) and the machine's head, so that pressurized water passes only through the ground coffee and not around it.
Typical signs of wear
An old or hardened gasket loses its flexibility and stops sealing properly. This shows up as water or coffee leaking around the sides of the handle, hissing or spitting during espresso preparation, a drop in pressure and uneven extraction, which affects the taste of the coffee. Sometimes, once the gasket is worn, the handle becomes harder to insert or sits looser than before.
When it's time for a replacement
A leaking seal reduces the pressure needed for proper extraction and causes uneven, often bitter or sour espresso. Prolonged water leakage also puts strain on surrounding components and can lead to buildup and contamination of the brew head.
How to choose the right gasket
- Check the dimensions and shape of the original gasket directly on your machine.
- Verify compatibility in the product's compatibility table according to your coffee machine model.
- When replacing it, we also recommend checking the condition of the shower screen and the portafilter itself.


