Part Number: 9915 pressure cooker overpressure plug (6 Pack) replaces parts 82117 & 33804 Compatibility: The 9915 over pressure plug compatible with most Presto Cookers and Canners manufactured after 1977 High Quality: The pressure plug made of high quality plastic,high temperature and high pressure resistance, strong and durable Function: Pressure cooker overpressure plug can release the pressure of the pressure cooker to protect the pressure cooker for safe cooking Easy to install: Remove the old over pressure plug and install the new one directly on the lid of the pressure cooker This silicone gasket ring is designed to fit Presto pressure canner models 0128206, 0126306, 0128202, 0128203, 0128204, 0128303, and all models starting with 01263. It replaces Presto part #09924, ensuring a seamless replacement.