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 17 in Nominal Width 1/8 in Actual Inside Dia 16.955 in Actual Width 0.139 in Dash Number 283 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 EPDM 70 Nominal Outside Dia 17 1/4 in Actual Outside Dia 17.233 in FDA Approved No Package Quantity 5