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 9/16 in Nominal Width 1/16 in Actual Inside Dia 0.5 in Actual Width 0.07 in Dash Number 015 Color Blue Durometer 70 Shore A Nominal Outside Dia 11/16 in Actual Outside Dia 0.691 in Temp Range -80 Degrees to 480 Degrees F FDA Approved No