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 3/8 in Nominal Width 1/16 in Actual Inside Dia 1.475 in Actual Width 0.118 in Dash Number 920 Color Black Durometer 75 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 1/2 in Actual Outside Dia 1.711 in Temp Range -15 Degrees to 400 Degrees F FDA Approved No Package Quantity 25