ARO 93210-86M38 REC93210-86M38

Function and technical context

This ring plays a critical function in the engine's closing and sealing system, guaranteeing tightness in areas of high pressure or mechanical movement. It is located in components subjected to constant friction, where its degradation compromises the structural integrity of the powertrain. Failure of this part leads to internal leaks, water entry into sensitive areas and loss of compression, symptoms that are evidenced by progressive overheating and a significant reduction in thrust power.

When to replace this part?

The wear of this ring is manifested by noticeable leaks in the joint areas, accelerated oxidation on adjacent surfaces or changes in the thermal behavior of the engine during navigation. It is recommended to inspect its condition during each seasonal maintenance, especially after prolonged periods of non-use or in water with high salinity. Preventive replacement avoids costly offshore repairs and ensures operational reliability under demanding sailing conditions.

Equivalent manufacturer part numbers