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 3/16 in Nominal Width 1/16 in Actual Inside Dia 1.475 in Actual Width 0.118 in Dash Number 920 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 5/16 in Actual Outside Dia 1.711 in Temp Range -65 Degrees to 300 Degrees F FDA Approved No Package Quantity 60