The O-ring clutch regulator for the Citroën DS is an essential seal that prevents leaks between the clutch regulator and connecting components. Made from durable, heat, and oil-resistant materials, this O-ring is specifically designed to withstand the wear of the hydraulic systems in the classic Citroën DS. The proper functioning of this seal is crucial for the consistency and reliability of the clutch performance. Replacing the O-ring can restore worn seals and helps maintain the vehicle's original performance, significantly extending the vehicle's lifespan.