Product Name: Pressure Cooker Sealing Ring Material: Silica Gel Application: Universal Aluminum Alloy Pressure Cooker Package List: Pressure Cooker Ring 1 Each Note Book The dimensions shown in the instruction are not the dimensions of the sealing ring, but the inner diameter of the compatible can.This product is an aluminum alloy pressure cooker, but you need to pay attention to the model number of the bottom of the pot.You can use anything that starts with A, but you cant use anything that starts with AS.If the model is not visible, please measure the inner diameter of the pressure cooker body if the pressure cooker is determined to aluminum.