Backup Ring Material Hytrel For Use with AS568A Dash No 240 Thickness 0.045 in Actual Width 0.105 in Nominal Width 1/8 in Actual Inside Dia 3.77 in Nominal Inside Dia 3 3/4 in Nominal Outside Dia 4 in Cross Section Shape Rectangular Durometer 55 Shore D Durometer (Hardness) Rating Very Hard Color Orange Temp Range -65 Degrees to 275 Degrees F Package Quantity 25