O-Ring, Not Metal Detectable Metal Detectable, Not X-Ray Detectable X-Ray Detectable, System of Measurement Inch, Cross Section Shape Round, O-Ring Material EPDM, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 2 3/4 in, Nominal Width 1/16 in, Actual Inside Dia. 2.739 in, Actual Width 0.07 in, Dash Number 039, Color Black, Durometer 70A, Meets/Exceeds ASTM D2000, EPDM 70, Nominal Outside Dia. 2 7/8 in, Actual Outside Dia. 2.879 in, FDA Approved Not FDA Compliant