Shaft Packing- Butt Ends (or) Skive 45-degree Cut Ends
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Shaft Packing- Butt Ends (or) Skive 45-degree Cut Ends

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    Super Moderator HammerDown's Avatar
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    Default Shaft Packing- Butt Ends (or) Skive 45-degree Cut Ends

    http://www.europeanmarine.co.uk/Dura...%20Packing.pdf

    Got some new hi tech packing above coming tomorrow...I've always just cut them on a 'butt' end and staggered the joints at 90 degrees but, more I'm reading a "Skive/45" cut on the ends even seals better!

    I figure the new/next owner will appreciate what ends I cut the 5/16 packing rings on.
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

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    Looks like the packing I just stuck in my berkeley that came from jet boat performance!

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    The graphite impregnated packings are better than rope seals with "old" type grease. Grease, as all lubes, have improved.When pumps are maintained in a plant atmosphere, the tendency is to not change to a new type grease without changing the packing as well. Mixing grease can be a bad thing. When the pumps I operate at work are rebuilt,The packing is very much like the stuff in your link.Rather than Nylon, they use carbon fiber. I run a ratchet from DPS on the input shaft which has a mechanical seal bathed in oil. It seals good and works well so far,14 yrs, but everything wears over time. My dominator pump was gone thru about 6 yrs ago.In addition to the pump work at that time, MPD massaged the components of the ratchet. To anyone running a jet, I recommend getting a Jetaway, if possible. My DPS ratchet is of similar design, but the originator passed on.

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by HammerDown View Post
    http://www.europeanmarine.co.uk/Dura...%20Packing.pdf

    Got some new hi tech packing above coming tomorrow...I've always just cut them on a 'butt' end and staggered the joints at 90 degrees but, more I'm reading a "Skive/45" cut on the ends even seals better!

    I figure the new/next owner will appreciate what ends I cut the 5/16 packing rings on.
    We have always "butted" the ends . 6 & 12, 6 & 12 ...., 4 in to begin add the 5th later , I use a grease brush , lots of red assy grease and the packing ears as a "tool" will check out the thread , learn something new everyday Tom

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    Super Moderator HammerDown's Avatar
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    Quote Originally Posted by jetboatperformance View Post
    We have always "butted" the ends . 6 & 12, 6 & 12 ...., 4 in to begin add the 5th later , I use a grease brush , lots of red assy grease and the packing ears as a "tool" will check out the thread , learn something new everyday Tom
    Interesting as I've always installed the packing dry (no grease) however the manufacture does say grease can be used...if so what about a simple waterproof White Lithium? Vs a red axle/wheel bearing grease > that's not water friendly.
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

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    I'm No Expert Shaun's Avatar
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    Would the grease even stay? I would think it would go away pretty quick or do you just grease them to make the initial installation of the shaft a a little bit easier?

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by HammerDown View Post
    Interesting as I've always installed the packing dry (no grease) however the manufacture does say grease can be used...if so what about a simple waterproof White Lithium? Vs a red axle/wheel bearing grease > that's not water friendly.
    We have used Sta Lube "tub" red wheel bearing grease for years But now were gonna rock the Lucas Red and Tacky weve been using it in pumps latley and like it so far Tom

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    Super Moderator HammerDown's Avatar
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    Quote Originally Posted by jetboatperformance View Post
    We have used Sta Lube "tub" red wheel bearing grease for years But now were gonna rock the Lucas Red and Tacky weve been using it in pumps latley and like it so far Tom
    Tom, earlier my packing arrived so I called the manufacture. I was told there is absolutely no reason or recommended to use any type of grease during installation of this packing. However, the 45 degree ends and how they will overlap got a thumbs up.
    I've been using the Lucas Red and Tacky for a few years now > thrust bearing. H-bar universals, trailer wheel bearings, Corvette and diesel truck u-joints...all over. The product doesn't seem to separate like even my old trusty Kendall Super Blue did.
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

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    Problem with the 45 degree joint is, that they are longer joints. imo staggered straight cuts are a better seal.
    Upper Midwest Power Boat Association
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    Senior Member motomattox's Avatar
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    I've always straight cut the ends, staggered. Coated with silver anti-seize. Thats the way I was taught....
    "Keep talking...it aint often I get to hear a genius speak"

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by HammerDown View Post
    Tom, earlier my packing arrived so I called the manufacture. I was told there is absolutely no reason or recommended to use any type of grease during installation of this packing. However, the 45 degree ends and how they will overlap got a thumbs up.
    I've been using the Lucas Red and Tacky for a few years now > thrust bearing. H-bar universals, trailer wheel bearings, Corvette and diesel truck u-joints...all over. The product doesn't seem to separate like even my old trusty Kendall Super Blue did.
    Always liked to have a little lube around Red and Tacky = good stuff

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