O-Ring, Metal Detectable Metal Detectable, Not X-Ray Detectable X-Ray Detectable, System of Measurement Inch, Cross Section Shape Round, O-Ring Material Silicone, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 3 1/4 in, Nominal Width 1/8 in, Actual Inside Dia. 3.2 in, Actual Width 0.139 in, Dash Number 236, Color Red, Durometer 50A, Meets/Exceeds 3A 18-03, FDA, Nominal Outside Dia. 3 1/2 in, Actual Outside Dia. 3.512 in, Temp. Range -80 Degrees to 450 Degrees F