O-Ring, No Metal Detectable, No X-Ray Detectable, System of Measurement Inch, Cross Section Shape Round, O-Ring Material PTFE, Durometer (Hardness) Rating Very Hard, Nominal Inside Dia. 4 1/2 in, Nominal Width 1/8 in, Actual Inside Dia. 4.484 in, Actual Width 0.139 in, Dash Number 246, Color White, Durometer 55 Shore D, Nominal Outside Dia. 4 3/4 in, Actual Outside Dia. 4.762 in, Temp. Range -100 Degrees to 500 Degrees F, Yes, Package Quantity 2