O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Metric Cross Section Shape Round O-Ring Material Viton Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 5 mm Nominal Width 2 mm Actual Inside Dia 5 mm Actual Width 2 mm Color Brown Durometer 75 Shore A Nominal Outside Dia 9 mm Actual Outside Dia 9 mm Temp Range -15 Degrees to 400 Degrees F FDA Approved No