O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Kalrez 7075 Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 1/16 in Nominal Width 1/16 in Actual Inside Dia 0.1 in Actual Width 0.07 in Dash Number 008 Color Black Durometer 75 Shore A Nominal Outside Dia 5/16 in Actual Outside Dia 0.316 in Temp Range 30 Degrees to 625 Degrees F FDA Approved No