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 Actual Inside Dia 0.301 in Actual Width 0.064 in Dash Number 903 Color Red Durometer 70 Shore A Meets/Exceeds ASTM D2000 FDA Approved SAE J200 Nominal Outside Dia 3/16 in Actual Outside Dia 0.429 in Temp Range -65 Degrees to 450 Degrees F FDA Approved Yes Package Quantity 50