O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Metric Cross Section Shape Round O-Ring Material Silicone Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 10 mm Nominal Width 1 mm Actual Inside Dia 10 mm Actual Width 1 mm Color Red Durometer 70 Shore A Meets/Exceeds FDA Nominal Outside Dia 12 mm Actual Outside Dia 12 mm Temp Range -80 Degrees to 450 Degrees F FDA Approved Yes