O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Polyurethane Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 9/16 in Nominal Width 3/32 in Actual Inside Dia 0.549 in Actual Width 0.103 in Dash Number 113 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 3/4 in Actual Outside Dia 0.755 in Temp Range -40 Degrees to 180 Degrees F FDA Approved No