O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material EPDM Durometer (Hardness) Rating Medium Hard Nominal Inside Dia 8 3/4 in Nominal Width 3/16 in Actual Inside Dia 8.725 in Actual Width 0.21 in Dash Number 372 Color Black Durometer 70 Shore A Meets/Exceeds ASTM D2000 SAE J200 Nominal Outside Dia 9 1/8 in Actual Outside Dia 9.145 in Temp Range -65 Degrees to 300 Degrees F FDA Approved No Package Quantity 5