There is also a portafilter gasket which has a outer diameter of 69mm and a inner diameter of 57mm. This portafilter gasket is a o ring and has the part refence number of 7496038. It can be used on the Bezzera B2000, Bezzera B3000 and the Bezzera B4000.
The most common size on modern Bezzera commercial and domestic espresso machines is the conical portafilter gasket with a OD of 72mm. The internal diameter of this portafilter is 55,5mm and the thickness is 9,4mm. The part reference number is 7493008. This gasket can be used on the Bezzera BZ07, Bezzera BZ40, Bezzera B2000, Bezzera B4000 and the Bezzera Ellisse.
A other common size is the portafilter gasket which has a outer diameter of 73mm a inner diameter of 57mm and a thickness of 8mm. Part ref 5493039. This gasket can be found on the Bezzera Galatea, Bezzera Galatea Domus, Bezzera Giulia and the Bezzera Unica.
The last model of portafilter gasket is the model with a outer diameter of 72mm a inner diameter of 57mm and a thickness of 8mm. reference number 5493034. This portafilter gasket is used on the Bezzera BZ02, Bezzera BZ34, Bezzera BZ40 and the Bezzera BZ99.
