X-Ray and Metal Detectable O-Ring Yes Metal Detectable Yes X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material Viton Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 5/16 in Nominal Width 1/16 in Actual Inside Dia 0.484 in Actual Width 0.139 in Dash Number 206 Color Blue Durometer 70 Shore A Meets/Exceeds FDA Nominal Outside Dia 7/16 in Actual Outside Dia 0.762 in Temp Range -30 Degrees to 400 Degrees F FDA Approved Yes