The Presto 09918 3-4 Qt. Pressure Cooker Sealing Ring with Automatic Air Vent is a high-quality kitchen accessory designed for pressure cookers. Made of durable rubber material, this sealing ring ensures a tight seal to keep your food fresh and flavorful. The automatic air vent feature adds convenience to your cooking experience by automatically releasing any excess air, making it easy to achieve the perfect pressure for cooking. With a capacity of 4 quarts, this sealing ring is suitable for use with various pressure cooker models, including the Presto 09918.