O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Buna N Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 1 in Nominal Width 1/16 in Actual Inside Dia 0.989 in Actual Width 0.07 in Dash Number 022 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 NBR 70 Nominal Outside Dia 1 1/8 in Actual Outside Dia 1.129 in FDA Approved No Package Quantity 50