O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Buna N Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 2 in Actual Inside Dia 2.09 in Actual Width 0.118 in Dash Number 928 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 1 3/4 in Actual Outside Dia 2.326 in Temp Range -40 Degrees to 250 Degrees F FDA Approved No Package Quantity 25