Backup O-Ring, Material TPE, For Use with AS568A Dash No. 216, Thickness 0.045 in, Nominal Width 1/8 in, Nominal Inside Dia. 1 1/8 in, Nominal Outside Dia. 1 3/8 in, Cross Section Shape Rectangular, Durometer 55D, Durometer (Hardness) Rating Very Hard, Color Black, Temp. Range -65 Degrees to 275 Degrees F, Package Quantity 50