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  1. #1
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    Aluminum sealant on center caps

    I recently got some new replacement wheels and my old BT center caps no longer fit. I had to grind down the caps to make them fit. After an embarrassing amount of hours on this, I’ve finally gotten them to fit while keeping the bolt holes intact.

    Do I need to seal the ground surface? It will not be visible, but I also don’t want to cause corrosion on my wheels. The wheels are painted, but I could have some scratches where these are installed. I think Billet technology uses AL6061. Any suggestions on sealing would be appreciated. I need something very thin.



    Last edited by SCOTT57RT; 09-15-2018 at 10:10 PM.
    SCOTT57RT
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  2. #2
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    I would put something on it as bare alum on bare alum will oxidize
    Just brush on some clear on the edges


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  3. #3
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    The aluminum has already oxidized, shortly after you stopped grinding...

    No need to do anything, especially up against another aluminum source.
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  4. #4
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    Quote Originally Posted by Hemissary View Post
    The aluminum has already oxidized, shortly after you stopped grinding...

    No need to do anything, especially up against another aluminum source.
    I’d really like to leave them uncoated since I have no room at all, so this is great news....thanks for the reply. I’m not in a snowy area and my car is not a DD, so I don’t have to deal with road salt. If I were, do you think it would matter?

  5. #5
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    Quote Originally Posted by SCOTT57RT View Post
    I’d really like to leave them uncoated since I have no room at all, so this is great news....thanks for the reply. I’m not in a snowy area and my car is not a DD, so I don’t have to deal with road salt. If I were, do you think it would matter?
    Given where the caps reside (inner / shielded wheel area), typical air flow, I don't think environmental conditions will be an issue. The oxidation that quickly develops on raw aluminum alloy surface after abrading or machining process acts like a protective coating.
    Last edited by Hemissary; 09-16-2018 at 12:47 PM.

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