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 1 1/8 in Nominal Width 3/16 in Actual Inside Dia 1.1 in Actual Width 0.21 in Dash Number 320 Color White Durometer 55 Shore D Nominal Outside Dia 1 1/2 in Actual Outside Dia 1.52 in Temp Range -100 Degrees to 500 Degrees F FDA Approved Yes Package Quantity 2