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 PTFE, Durometer (Hardness) Rating Very Hard, Nominal Inside Dia. 2 9/16 in, Nominal Width 3/32 in, Actual Inside Dia. 2.55 in, Actual Width 0.103 in, Dash Number 145, Color White, Durometer 55D, Nominal Outside Dia. 2 3/4 in, Actual Outside Dia. 2.756 in, Temp. Range -100 Degrees to 500 Degrees F,