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 3/16 in Nominal Width 3/32 in Actual Inside Dia 0.2 in Actual Width 0.103 in Dash Number 109 Color Black Durometer 75 Shore A Nominal Outside Dia 1/2 in Actual Outside Dia 0.505 in Temp Range 30 Degrees to 625 Degrees F FDA Approved No