Backup O-Ring, Material TPE, For Use with AS568A Dash No. 238, Thickness 0.045 in, Actual Width 0.105 in, Nominal Width 1/8 in, Actual Inside Dia. 3.52 in, Nominal Inside Dia. 3 1/2 in, Nominal Outside Dia. 3 3/4 in, Cross Section Shape Rectangular, Durometer 55D, Durometer (Hardness) Rating Very Hard, Color Orange, Temp. Range -65 Degrees to 275 Degrees F, Package Quantity 25