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 Actual Inside Dia 1.475 in Actual Width 0.118 in Dash Number 920 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 1 7/10 in Actual Outside Dia 1.711 in Temp Range -40 Degrees to 250 Degrees F FDA Approved No Package Quantity 25