O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Rectangular O-Ring Material PTFE Durometer (Hardness) Rating Very Hard Nominal Inside Dia 45/64 in Actual Inside Dia 0.702 in Actual Width 0.086 in Color White Durometer 55 Shore D Nominal Outside Dia 7/8 in Actual Outside Dia 0.874 in Temp Range -100 Degrees to 500 Degrees F FDA Approved Yes Package Quantity 50