Presto Pressure Cooker Sealing Ring With Air Vent 4 Qt. The product is Pressure Cooker Sealing Ring With Automatic Air Vent, For 3 & 4 QT Cast Aluminum Models Inc. Easy and simple use kit The product is manufactured in China Replaces Presto part 1071. Automatic Air Vent replaces parts 393 & 82058. Includes Automatic Air Vent.