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    Re: Instrument repair
    From: Jared Sherman
    Date: 2002 Dec 19, 11:24 -0500

    Robert-
     My expertise obviously doesn't exist compared to Ken's. But I am familiar 
    with what may be the "ultimate" lubricant for nautical instruments, DuPont's 
    Krytox.
    
    Available as a syrupy liquid or a white grease that apears similar to Crsico 
    shortening, Krytox is chemically similar to a liquid form of Teflon. It is 
    unaffected by acids, alkalis, water, salt water, and even free oxygen, 
    sulphur, or chlorine gas. It retains original thickness, tiffness, and 
    lubricating properties from roughtly -70F to +650F, making it suitable for 
    all but the worst days recorded in Antarctica, where is might get a little 
    stiff at -120F.
    
    It costs about $5 per half ounce or ounce but "lasts forever" makes that not 
    unreasonable. It is used commercially for odd purposes like lubricating 
    inside spark plug boots, so no "welded" or corossion occurs in the 5 years or 
    50,000+ miles now recommended for intervals, as a very thin spray.
    
    Here in the states Miller Freeman is one of the distributors, you can track 
    down a local one from the DuPont web sites, search on Krytox. I've used the 
    white grease form on sextants, since it doesn't bleed, migrate, or stain it 
    is a very civilized "maintenance crew" to have around.
    
    
    

       
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