The Kubota 10400109 Seal Ring is a genuine OEM replacement part designed to provide a secure and leak-free seal in a wide range of Kubota agricultural, construction, and utility machinery. This O-ring features an inner diameter of 10.8 mm, an outer diameter of 16.8 mm, and a thickness of 3 mm. It is a critical component for maintaining system integrity across numerous Kubota models, including B-Series, BX-Series, L-Series, M-Series tractors, RTV utility vehicles, ZD/ZG mowers, and KX/U excavators.