Magefesa Gasket for Athens / Prakitika Plus 4-8 Qt Suitable for PRACTIKA PLUS 4.2 - 6.3 - 8.4 Qt / ATHENAS 4.2 - 6.3 - 8.4 Qt. Diameter: 9.5" OD (Outside Diameter) Please look on the bottom of pan for madel number and year. When storing, place the lid facing downwards allowing for ventilation. WARNING: The Silicone gasket is considered worn out once the pressure cooker looses steam from the side. For your safety we recommend that you change the gasket every two years.