09985 Pressure canner sealing ring (Comes with 4 overpressure plug) Pressure Cooker or Canner Gasket 09985 Compatible with Presto pressure cookers or canners. Fits into cover and forms a pressure tight seal between the cover and the body during cooking Fits Model: models 0174510(16-Quart), 0175107(18-Quart), 0175510(16-Quart), 0178107( 23-Quart ), 0178209( 23-Quart ), 0178410( 23-Quart ) Easy to install: Wash the gasket groove thoroughly before installing, soak the pressure cooker gasket in warm water for 5 minutes to increase flexibility, insert the gasket and press it firmly into the groove Note: Compatible with Presto pressure cooker models only. Please confirm whether the product size and model match your pressure cooker before purchasing Fits Model: models 0174510(16-Quart), 0175107(18-Quart), 0175510(16-Quart), 0178107( 23-Quart ), 0178209( 23-Quart ), 0178410( 23-Quart ).