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 56 mm Nominal Width 3 mm Actual Inside Dia 56 mm Actual Width 3 mm Color Black Durometer 75 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 62 mm Actual Outside Dia 62 mm Temp Range -15 Degrees to 400 Degrees F FDA Approved No Package Quantity 8