Keep your coffee pot performing at its best with a Bialetti Moka Pot Aluminium Replacement Seal and Filter Plate. We recommend replacing your Bialetti seals every three months or at the first signs of wear. This simple maintenance step ensures your stovetop espresso maker functions optimally by maintaining the water chamber's seal, creating ideal pressure, and filtering your coffee for a perfect morning brew. Not sure what size you need? Use our easy sizing table below by measuring your current Seal to match the seal required for your Moka Pot. This Product Includes: 1 x Bialetti Replacement Seal 1 x Bialetti Replacement Filter The Specifics Model Compatibility Cup Size Size / Measurement of Seal (mm) Inside Diameter / Outside Diameter Moka Express 1 cup Mini Express 1 Cup 1 Cup 39mm / 52mm Moka Express 2 Cup Moka Induction 2 cup Mini Express 2 cup 2 Cup 42mm / 56mm Moka Express 3/4 cup Moka Induction 3/4 cup Brikka 2 cup 3-4 Cup 50mm / 65mm *3 Cup seal & filter fits 2 Cup Brikka model Moka Express 6 cup Moka Induction 6 cup Brikka 4 cup 6 Cup 55mm / 72mm *6 Cup seal & filter fits 4 Cup Brikka model Moka Express 9 cup 9 Cup 63mm / 80mm Moka Express 12 cup 12 Cup 74mm / 90mm Moka Express 18 cup 18 Cup 74mm / 92mm