SEAL 26-82165M

Function and technical context

The 26-82165M seal is a precision oil seal that acts as a watertight barrier at critical points in the lubrication system of Mercury, Mariner and MerCruiser marine engines. Its function is to prevent oil from leaking outwards while allowing the shafts to rotate freely, maintaining the integrity of the lubrication circuit under the demands of the marine environment. When this seal fails or wears, oil leaks compromise lubrication pressure, accelerating wear of internal components and exposing the engine to operation without adequate hydrodynamic protection.

When to replace this part?

Oil seals present typical symptoms of aging: oil stains in the lower area of ​​the engine, visible dripping at rest or during navigation, and a drop in lubricant level without apparent cause. Although there is no fixed replacement interval, seals should be inspected at each seasonal inspection and replaced preventively if they show signs of hardening, cracking or loss of elasticity. Replacing the seal preventively avoids costly repairs at sea and ensures that the lubrication system operates without compromise.

Engine Compatibility

Mercury/MerCruiser

Equivalent manufacturer part numbers