O-Ring, Metal Detectable Metal Detectable, Not X-Ray Detectable X-Ray Detectable, System of Measurement Metric, Cross Section Shape X, O-Ring Material Buna N, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 16 mm, Nominal Width 1.5 mm, Actual Inside Dia. 16 mm, Actual Width 1.5 mm, Dash Number Not Applicable, Color Black, Durometer 70A, Nominal Outside Dia. 19 mm, Actual Outside Dia. 19 mm, Temp. Range -40 Degrees to 250 Degrees F, FDA Approved FDA Approved