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 2 5/8 in Nominal Width 1/16 in Actual Inside Dia 2.614 in Actual Width 0.07 in Dash Number 038 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 EPDM 70 Nominal Outside Dia 2 3/4 in Actual Outside Dia 2.754 in FDA Approved No Package Quantity 10