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 1 21/64 in Nominal Width 1/16 in Actual Inside Dia 1.334 in Actual Width 0.119 in Color White Durometer 55 Shore D Nominal Outside Dia 13/16 in Actual Outside Dia 1.572 in Temp Range -100 Degrees to 500 Degrees F FDA Approved Yes Package Quantity 25