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 11/16 in Nominal Width 1/16 in Actual Inside Dia 0.6 in Actual Width 0.07 in Dash Number 017 Color Green Durometer 70 Shore A Nominal Outside Dia 13/16 in Actual Outside Dia 0.816 in Temp Range -55 to 300 Degrees F FDA Approved No