O-Ring No Metal Detectable No X-Ray Detectable System of Measurement Inch Cross Section Shape Round O-Ring Material PTFE Durometer (Hardness) Rating Very 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 White Durometer 55 Shore D Nominal Outside Dia 5/8 in Actual Outside Dia 0.63 in Temp Range -300 Degrees to 500 Degrees F FDA Approved Yes Package Quantity 25