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 7/8 in Nominal Width 1/8 in Actual Inside Dia 1.859 in Actual Width 0.139 in Dash Number 225 Color White Durometer 55 Shore D Nominal Outside Dia 2 1/8 in Actual Outside Dia 2.137 in Temp Range -300 Degrees to 500 Degrees F FDA Approved Yes Package Quantity 5