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. 130 mm, Nominal Width 2.5 mm, Actual Inside Dia. 130 mm, Actual Width 2.5 mm, Color Black, Durometer 75 Shore A, Nominal Outside Dia. 135 mm, Actual Outside Dia. 135 mm, Temp. Range -15 Degrees to 400 Degrees F, FDA Approved No