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 7/8 in Nominal Width 1/16 in Actual Inside Dia 0.864 in Actual Width 0.07 in Dash Number 020 Color White Durometer 55 Shore D Nominal Outside Dia 1 in Actual Outside Dia 1.004 in Temp Range -300 Degrees to 500 Degrees F FDA Approved Yes Package Quantity 10