The mechanical seal for the cooling water pump (code K 73027) plays a vital role in maintaining the integrity of the Sulzer ZV40/48 engine's cooling system. This seal prevents leaks by creating a secure barrier between the pump’s rotating and stationary components, ensuring that coolant remains contained even under high-pressure conditions. Built to withstand extreme operational demands, the seal contributes to the cooling system's efficiency and the engine's overall performance. Timely replacement of the mechanical seal is critical to avoiding coolant leaks and ensuring consistent engine operation.