O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Kalrez 4079 Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 1 1/16 in Nominal Width 3/32 in Actual Inside Dia 1 in Actual Width 0.103 in Dash Number 121 Color Black Durometer 75 Shore A Nominal Outside Dia 1 1/4 in Actual Outside Dia 1.255 in Temp Range 30 Degrees to 600 Degrees F FDA Approved No