O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Kalrez 7075 Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 3/64 in Nominal Width 1/16 in Actual Inside Dia 0 in Actual Width 0.07 in Dash Number 004 Color Black Durometer 75 Shore A Nominal Outside Dia 13/64 in Actual Outside Dia 0.21 in Temp Range 30 Degrees to 625 Degrees F FDA Approved No