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 205 mm Nominal Width 5 mm Actual Inside Dia 205 mm Actual Width 5 mm Color Black Durometer 75 Shore A Nominal Outside Dia 215 mm Actual Outside Dia 215 mm Temp Range -15 Degrees to 400 Degrees F FDA Approved No