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 15/16 in Nominal Width 3/16 in Actual Inside Dia 0.912 in Actual Width 0.21 in Dash Number 317 Color Red Durometer 70 Shore A Meets/Exceeds ASTM D2000 -VQM 70 FDA 21 CFR 177.2600 Nominal Outside Dia 1 5/16 in Actual Outside Dia 1.332 in Temp Range -65 Degrees to +400 Degrees F