This aftermarket 385766R91 RT1 oil seal is designed as a direct replacement for the genuine Case IH part number 385766R91. It features precise dimensions of 40mm inner diameter, 60mm outer diameter, and 8mm width, ensuring compatibility and effective sealing performance in various agricultural machinery. Ideal for maintaining hydraulic or transmission systems, this seal offers a cost-effective solution for Case IH and International Harvester tractor models. Weighing approximately 0.04 kg, it provides reliable functionality for rear applications.