The gray sealing ring with a diameter of 22 cm is a replacement silicone sealing ring from WMF. It is important to replace this after approximately 400 cooking processes or at the latest after 2 years to ensure the optimal performance of your pressure cooker. This high-quality silicone sealing ring provides a reliable seal for the pressure cooker. It ensures that the pressure inside the pot remains constant, allowing food to be cooked evenly and efficiently. Replace it after about 400 cooking processes or at the latest after 2 years. Reliable sealing for even and efficient cooking. Suitable for WMF pressure cookers of the "Perfect" series with a diameter of 22 cm. Quality and reliability from WMF.