Backup Ring Material Hytrel For Use with AS568A Dash No 12 Thickness 0.045 in Actual Width 0.062 in Nominal Width 1/16 in Actual Inside Dia 0.375 in Nominal Inside Dia 3/8 in Actual Outside Dia 0.5 in Nominal Outside Dia 1/2 in Cross Section Shape Rectangular Durometer 55 Shore D Durometer (Hardness) Rating Very Hard Color Black Temp Range -65 Degrees to 275 Degrees F Package Quantity 50