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 3 1/2 in Nominal Width 1/16 in Actual Inside Dia 3.489 in Actual Width 0.07 in Dash Number 043 Color White Durometer 55 Shore D Nominal Outside Dia 3 5/8 in Actual Outside Dia 3.629 in Temp Range -100 Degrees to 500 Degrees F FDA Approved Yes Package Quantity 5