Faucet O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material EPDM Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 5/8 in Nominal Width 1/16 in Actual Inside Dia 0.676 in Actual Width 0.07 in Dash Number 017 Color Black Durometer 70 Shore A Nominal Outside Dia 7/8 in Actual Outside Dia 0.816 in FDA Approved No Package Quantity 10