O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Fluorosilicone Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 5/8 in Nominal Width 1/16 in Actual Inside Dia 0.6 in Actual Width 0.07 in Dash Number 016 Color Blue Durometer 70 Shore A Nominal Outside Dia 3/4 in Actual Outside Dia 0.754 in Temp Range -80 Degrees to 480 Degrees F FDA Approved No