O-Ring, Metal Detectable Metal Detectable, Not X-Ray Detectable X-Ray Detectable, System of Measurement Metric, Cross Section Shape Round, O-Ring Material Viton, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 12 mm, Nominal Width 2 mm, Actual Inside Dia. 12 mm, Actual Width 2 mm, Dash Number Not Applicable, Color Black, Durometer 75A, Nominal Outside Dia. 16 mm, Actual Outside Dia. 16 mm, Temp. Range -15 Degrees to 400 Degrees F, FDA Approved FDA Approved