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Thread: Do I need to use Sealing Compound on my rocker cover?

  1. #1
    Join Date
    Jan 2019
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    1995 840ci

    Do I need to use Sealing Compound on my rocker cover?

    Hi All,

    I'm replacing the rocker cover gaskets on my 840ci soon, so I've been checking the maintenance manual ahead of doing so.

    It says to use 'rubber anti-friction compound e.g. Glycerin' when fitting the gasket to the cover - I presume that I can use red rubber grease for this?

    It also says to 'coat the contact faces of the joint with Hylomac SQ 32M** liquid sealing compound'. Is this necessary and, if so, can anyone recommend a product (available in UK)? I've googled 'Hylomac' and it doesn't return any results.

    Thanks in advance

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
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    Normally Black RTV works in the corners of the half-moon on the gasket. Just put a little in the corners, and you will be good, just don't go over board.
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