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 7/16 in Nominal Width 3/32 in Actual Inside Dia 0.424 in Actual Width 0.103 in Dash Number 111 Color Red Durometer 70 Shore A Meets/Exceeds ASTM D2000 -VQM 70 FDA 21 CFR 177.2600 Nominal Outside Dia 5/8 in Actual Outside Dia 0.63 in Temp Range -65 Degrees to +400 Degrees F FDA Approved Yes