WMF Perfect Ultra + Perfect Pro Replacement Part Safety Seal Residual Pressure Safety Device for Pressure Cookers 2.5 l - 8.5 l, Plastic. The seal is suitable for all WMF pressure cookers with a residual pressure safety device. The pressure cooker with a twist in the handle. Sometimes, a masterpiece can only be created from exquisite ingredients if you take your time. But sometimes, cooking just can't be fast enough. With the WMF pressure cooker, you not only save time in this case but also a lot of energy. This preserves vitamins and your nerves. Induction compatible. The WMF Perfect Ultra pressure cooker stands out with its forward-thinking design and maximum ease of use. This is primarily ensured by the all-in-one rotary knob on the handle: opening and closing, selecting the cooking level, and the steam release automation – everything is controlled through this central control element. The integrated timer allows for precise cooking thanks to visual and acoustic signals. The gentle steam release automation of the WMF Perfect Ultra ensures that steam escapes softly, making it easy and safe to open the pot. Thanks to the flame protection on the pot and side handle, the WMF Perfect Ultra is also suitable for use on a gas stove. To ensure you enjoy your steam pot for a long time, the WMF Perfect Ultra is made of indestructible Cromargan. And for easy cleaning, the handle is removable, and both the pot and lid are dishwasher safe. Four different sizes of pots, a pan, and two sets are available.