RETAINER 26-825027

Function and technical context

The 26-825027 seal is a critical sealing component that acts on the drive shaft of outboard engines and stern platforms, preventing the entry of seawater and contaminants into the engine's sealing areas. This seal works in the transmission system, where it must withstand continuous rotation and variable pressures derived from operation in salt water. Its deterioration allows water infiltration that compromises internal lubrication, causes accelerated corrosion of the shaft and generates loss of engine performance, in addition to the risk of total breakdown during navigation.

When to replace this part?

Typical symptoms of wear on transmission seals include oil dripping around the shaft, visible entry of water into the engine crankcase and progressive loss of lubricant during navigation. It is recommended to check its condition during each seasonal maintenance and replace it preventively every two or three years in boats with regular use, or if leaks are observed. A preventive replacement when stranded avoids costly repairs in the middle of the sea and ensures total watertightness of the propulsion system.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers