O-Ring, No Metal Detectable, No X-Ray Detectable, System of Measurement Inch, Cross Section Shape Round, O-Ring Material Silicone, Durometer (Hardness) Rating Medium Hard, Nominal Inside Dia. 3/8 in, Nominal Width 1/16 in, Actual Inside Dia. 0.3 in, Actual Width 0.07 in, Dash Number 012, Color Red, Durometer 50 Shore A, Meets/Exceeds 3A 18-03, FDA, Nominal Outside Dia. 1/2 in, Actual Outside Dia. 0.504 in, Temp. Range -80 Degrees to 450 Degrees F, FDA Approved Yes