O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Kalrez 6230 Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 1/8 in Nominal Width 1/16 in Actual Inside Dia 0.1 in Actual Width 0.07 in Dash Number 006 Color Black Durometer 75 Shore A Meets/Exceeds 3A 18-03 FDA USP Class VI Nominal Outside Dia 1/4 in Actual Outside Dia 0.254 in Temp Range 30 Degrees to 520 Degrees F FDA Approved Yes