O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Buna N Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 1 1/16 in Nominal Width 1/16 in Actual Inside Dia 1 in Actual Width 0.07 in Dash Number 023 Color Black Durometer 70 Shore A Nominal Outside Dia 1 3/16 in Actual Outside Dia 1.191 in Temp Range -30 Degrees to 250 Degrees F FDA Approved No