The Mr. Cook Pressure Cooker Sealing Ring for 3.0L / 4.5L pressure cookers is an essential accessory designed to ensure safe and efficient cooker performance. Made from durable and flexible silicone, it provides a secure seal that maintains proper pressure during cooking while helping reduce cooking time. Compatible with Mr. Cook 3-liter and 4.5-liter pressure cookers, it is easy to install, heat resistant, and ideal for replacing worn sealing rings, extending the lifespan of your cooker.