O-Ring, No Metal Detectable, No X-Ray Detectable, System of Measurement Inch, Cross Section Shape Round, O-Ring Material EPDM, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 12 in, Nominal Width 1/4 in, Actual Inside Dia. 11.975 in, Actual Width 0.275 in, Dash Number 453, Color Black, Durometer 70 Shore A, Meets/Exceeds ASTM D2000, SAE J200, Nominal Outside Dia. 12 1/2 in, Actual Outside Dia. 12.525 in, Temp. Range -65 Degrees to 300 Degrees F, FDA Approved No, Package Quantity 2