Sizes: Suitable for 5L or 6L pressure cooker,manual measurement will have a little error, the actual product shall prevail.please pay attention to the product information before buying. High efficiency sealing: Thanks to the flexible silicone material, the use of the sealing ring on the gasket guarantees an effective sealing that allows you to cook easily. Replaceable: It can replace the sealing ring of the gasket to ensure the cook is safe. Material: Sealing ring is maded of food-grade silicone, non-toxic, high temperature resistant, safe and durable to use. Easy to install: Elastic silicone facilitates fixing on the lid of the pressure cooker.