O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material HNBR Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 9/16 in Nominal Width 3/32 in Actual Inside Dia 0.5 in Actual Width 0.103 in Dash Number 113 Color Green Durometer 70 Shore A Nominal Outside Dia 3/4 in Actual Outside Dia 0.755 in Temp Range -55 to 300 Degrees F FDA Approved No