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 1/2 in Nominal Width 1/16 in Actual Inside Dia 0.4 in Actual Width 0.07 in Dash Number 014 Color Blue Durometer 70 Shore A Nominal Outside Dia 5/8 in Actual Outside Dia 0.629 in Temp Range -80 Degrees to 480 Degrees F FDA Approved No