RETAINER 26-95472M

Function and technical context

This seal acts as a sealing barrier in the cooling and lubrication systems of marine engines, preventing coolant, oil leaks and the entry of water or contaminants into the engine. Its mission is to maintain the integrity of the hydraulic and thermal circuits under variable pressure and temperature conditions typical of naval propulsion. When the seal loses its sealing capacity, the direct consequence is the infiltration of salt water into internal circuits, progressive loss of coolant, accelerated corrosion of vital components and, in advanced cases, irreversible overheating of the engine block with the risk of catastrophic breakdowns.

When to replace this part?

Characteristic symptoms of degradation include visible drips around the installation area, unexplained drops in the coolant level, and the presence of whitish foam in the engine oil, indicative of water infiltration into the lubrication. It is recommended to inspect the seal during each seasonal maintenance, especially after prolonged navigation in salt water, and to proceed with its preventive replacement during major engine overhauls or in the event of any sign of visible deterioration. Preventive replacement is an investment in reliability: it avoids emergency repairs at sea and significantly extends the life of the cooling pump and engine cylinders.

Equivalent manufacturer part numbers