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 2 3/4 in Nominal Width 1/8 in Actual Inside Dia 2.7 in Actual Width 0.139 in Dash Number 232 Color Blue Durometer 70 Shore A Nominal Outside Dia 3 in Actual Outside Dia 3.012 in Temp Range -80 Degrees to 480 Degrees F FDA Approved No