Gasket, Compatible with Pump Type Straight Centrifugal, Compatible with Brand Dayton, Compatible with Grainger Part Number 1TMU5, 1TMU6, 1TMU7, 1TMU8, 1TMU9, 4ZA36A, 4ZA38A, 4ZA39A, 4ZA40A, 4ZA41A, 4ZA42A, 4ZA43A, 4ZA44A, 4ZA45A, 4ZA46A, 4ZA47A, 4ZA48A, Compatible with Manufacturer Model Number 1TMU5, 1TMU6, 1TMU7, 1TMU8, 1TMU9, 4ZA36A, 4ZA38A, 4ZA39A, 4ZA40A, 4ZA41A, 4ZA42A, 4ZA43A, 4ZA44A, 4ZA45A, 4ZA46A, 4ZA47A, 4ZA48A, Gasket Material Buna-N, Includes O-Ring WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)