71 mm x 56.5 mm x 8.3 mm (Red) conical, for all of the older models of Nuova Simonelli, including the Program, Optima, Personal, Program VIP, Premier, Premier Maxi, Mac Digit, Mac Cup, Mac 2000, Appia and Appia II. Newer models such as the Aurelia use the . The Cafelat and "NS 2" side faces up when installing.

Not suggested for home machines such like the Musica, Oscar, ore Oscar II.

Some product history and notes:

• The reason silicone was chosen as the material is purely from a cleanliness point of view, the gaskets are neutral and do not have any smell or taste  
• They do not bake hard so removal is easier
• No need to crank the portafilter tight in the machine as you would a hard EPDM rubber (the industry standard) gasket
• Always use a such as food safe white grease. Silicone does not like petroleum based grease 
• When installing do not use a sharp screwdriver to push them in, the silicone will break. Use the portafilter with the basket removed to install  
• All batches are tested, the manufacture use FDA approved silicone and have them independently in Hong Kong