"Replace engine fan seal"

This summer I'm replacing the radiator on my 1986 560SL.

In my notes, I have an item to complete which is "Replace the engine fan seal".

Do you have any idea what I was thinking when I wrote that down?

What is a Fan Seal?

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Thanks for the help
Bill Fisher

'86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle
02 E430 in the stable
'14 LS460 (Lexus)
- - - - -
'95 E420 (198K) found a new home
'99 E320 (80K) (gave it's life for me as we hit a bumper)
'95 E420 (231K) Sold to a happy buyer, new to Mercedes
'90 300E (65K) Sold to an Mercedes Lover
'92 190E (215K) - retired to the salvage yard
'93 500SEL (214K) - Moved to another family, still runs like a young pup

Rubber flaps/air dams around the radiator or AC condenser?

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer

I'm wondering if it is the fan shroud? You should be able to look at it and tell if it is damaged or not.

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Jim