O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Viton Durometer (Hardness) Rating Very Hard Actual Inside Dia 0.239 in Actual Width 0.064 in Dash Number 902 Color Black Durometer 90 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 1/8 in Actual Outside Dia 0.367 in Temp Range -15 Degrees to 400 Degrees F FDA Approved No Package Quantity 25