Part Number 238-5264 - A New Original O-Ring (0.139" Thick x 7.484" ID,) For A CaseIH 7110, 7120, 7130, 7140, 7150 Tractors, IH 756, 766, 786, 826, 856, 886, 966, 986, 1066, 1086, 1466, 1468, 1486, 1566, 1568, 1586, 3088, 3288, 3388, 3588, 3688, 3688HC, 3788, 4100, 4156, 4166, 4186, 5088, 5288, 5488, 6388, 6588, 6788, 7288, 7488, Hydro 100 Tractors, Farmall 756, 826 Tractors, IH Industrial 2756, 2826, 2856 Tractors.  Old Part Numbers Are 87629042, 22419R1, 44.04382, 70624651, 70626560, 70924166, 73008143, 9964708, A3230442, MLR4404382, P3230442, X1430483.