O-Ring, Metal Detectable Metal Detectable, Not X-Ray Detectable X-Ray Detectable, System of Measurement Inch, Cross Section Shape Round, O-Ring Material Buna N, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 4 1/4 in, Nominal Width 1/4 in, Actual Inside Dia. 4.2 in, Actual Width 0.275 in, Dash Number 423, Color Black, Durometer 70A, Nominal Outside Dia. 4 3/4 in, Actual Outside Dia. 4.775 in, Temp. Range -40 Degrees to 250 Degrees F, FDA Approved FDA Approved. This item has been restricted from sale in the following state (s): []