Comparable to Fagor unit # 998010188 Replacement for many (but not all) 9" diameter Fagor pressure cooker sealing rings when worn/dried-out or when elasticity is lost (or every 12-18 months), per Fagor instructions. Very Important: This Is Not A One Size Fits All. To ensure compatibility, measure your old gasket and pressure cooker pot. The old gasket should have an inner diameter of approximately 8.5" (inches) and an outer diameter of approximately 9.5". The pot should be approximately 9" in diameter. Does Not Fit The Following: 8 and 10 quart single unit cookers, 4/8 quart cooker sets, pressure cooker/fryer (w/ clamp-down lid), or electric cookers, including Electric Multi-Cooker, Premium Pressure Cooker (6/8 quart) and Lux Multi-Cooker (4/6/8 quart and white). Not for use with other pressure cooker brands (only Fagor) Please note: This pressure cooker replacement gasket is an aftermarket replacement product (produced by Impresa) meeting or exceeding the quality of OEM rings (based on in-house testing). Any other brands mentioned are for illustrative purposes only and are in no way affiliated with Impresa Products, nor do they endorse Impresa Products