O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Viton Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 3 in Nominal Width 1/8 in Actual Inside Dia 2.984 in Actual Width 0.139 in Dash Number 234 Color Black Durometer 75 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 3 1/4 in Actual Outside Dia 3.262 in Temp Range -15 Degrees to 400 Degrees F FDA Approved No Package Quantity 10