Features: Replacement sealing ring gasket for pressure cooker to ensure safe cooking. Silicone material,non-toxic and tasteless.High temperature resistance. Stretchy silicone makes it easy to fix on the cover of your pressure cooker. It has high elasticity to ensure efficient sealing. High efficient sealing,which can make your food cooked easily. Application: Only applicable to aluminum alloy pressure cooker, not applicable to stainless steel pressure cooker and electric pressure cooker Specification: Material:Silicone Size: Diameter:18cm/20cm/22cm/24cm/26cm/28cm/30cm/32cm(Optional) (Notice:The diameter here is not the size of the seal ring, but the size of the inner diameter of the pressure cooker.For example, the inner diameter of your pressure cooker is 18cm, then you should choose 18cm)