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 15/16 in Nominal Width 1/8 in Actual Inside Dia 0.9 in Actual Width 0.139 in Dash Number 213 Color Green Durometer 70 Shore A Nominal Outside Dia 1 3/16 in Actual Outside Dia 1.199 in Temp Range -55 to 300 Degrees F FDA Approved No