'O-Ring, No Metal Detectable, No X-Ray Detectable, System of Measurement Metric, Cross Section Shape Round, O-Ring Material Buna N, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 7.1mm, Nominal Width 1.6mm, Actual Inside Dia. 7.1mm, Actual Width 1.6mm, Color Black, Durometer 70 Shore A, Meets/Exceeds SAE J200, ASTM D2000, Nominal Outside Dia. 10.3mm, Actual Outside Dia. 10.3mm, Temp. Range -40 Degrees to 250 Degrees F, Package Quantity 100'