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 13 in Nominal Width 3/16 in Actual Inside Dia 12.975 in Actual Width 0.21 in Dash Number 382 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 EPDM 70 Nominal Outside Dia 13 3/8 in Actual Outside Dia 13.395 in FDA Approved No Package Quantity 5