O-Ring, Metal Detectable Metal Detectable, 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. 7/16 in, Nominal Width 1/16 in, Actual Inside Dia. 0.549 in, Actual Width 0.103 in, Dash Number 113, Color Blue, Durometer 70A, Meets/Exceeds FDA, Nominal Outside Dia. 9/16 in, Actual Outside Dia. 0.755 in, Temp. Range -30 Degrees to 250 Degrees F, FDA Approved FDA Approved