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Old 06-23-2014, 01:53 PM   #1
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Stuffing Box Re-packed

I re-packed my stuffing box and took a little ride for a couple hours yesterday. When I finished the re-pack I tightened the nut till the water stopped leaking. Before I started my ride yesterday, I loosened the nut so a little water would come through to keep things cool. As I went along, more water (not much, a little stream) would come in, so I would tighten the nut to slow it down to a few drops. At the end of the ride, the nut, which is about 5 inches long and partially full of stuffing, got too hot to touch, even w/ water coming through. This can't be normal though I figured there is a break-in period for the new stuffing. All told, I got about 1.5 gallons of water in the shaft alley below the box.
I need to add more stuffing as the original amount I put in is now more compressed than when I started the ride. Any thoughts on this?
Thanks.
Mike
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Old 06-23-2014, 02:40 PM   #2
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did you use Gore packing? Sounds like somehow the packing didn't get set properly. Did you get all the old stuff out??
It may have gotten burned. Consider doing over and just a little slow running a the dock at first.
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Old 06-23-2014, 02:46 PM   #3
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I don't know if it's Gore or not, had a guy from a local boat yard come over and we did it together, he brought the stuffing. We packed grease in with the stuffing when putting it into the nut; some of the grease ran out of the nut along with the hot water that was dripping out.
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Old 06-23-2014, 02:48 PM   #4
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I looks and feels like sticky rope.
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Old 06-23-2014, 04:29 PM   #5
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Mine was just done. It took three rounds of the "Drip Less Moldable Packing Kit" -- once around (butting ends) then again, and a final third time.

Tighten until one drop per ten seconds.
Go for a ride of one hour.

Loosen until a stream of water comes out then tighten to ten seconds.
Repeat for four separate one hour underway trips and you should be good for life.

At least that's what I've done with Seaweed. And no, mine is not hot. Something's wrong.
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Old 06-23-2014, 04:37 PM   #6
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Once compressed...loosening in my experience seems to have little effect...especially the innermost rings it seems....best to start over or give it a little time...too hot to touch is one thing...sizzling water is another.

also...if it were getting that hot...did you notice a pile of goo in front of and underneath the packing nut? Usually conventional stuff will start dripping out if getting too warm and still no water as it has melted and sealed around the shaft at rest...but will be moist and dripping when running (still hot though)
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Old 06-23-2014, 04:46 PM   #7
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Janice: Did your ever get hot enough that you couldn't touch it?
PSN: Yes, there was goo underneath even with the water running. It wasn't sizzling though the water was pretty hot. Certainly would not have wrapped my hand around the nut, too hot for that.
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Old 06-23-2014, 04:52 PM   #8
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Quote:
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Janice: Did your ever get hot enough that you couldn't touch it?
PSN: Yes, there was goo underneath even with the water running. It wasn't sizzling though the water was pretty hot. Certainly would not have wrapped my hand around the nut, too hot for that.
Hate to say it...but I would repack...just for peace of mind.

Doesn't cost that much and while a PIA...so is constant fiddling with it.

Definitely go with at least Teflon impregnated stuffing..I know some will beat me up on that...or go for the absolute top of the line...but in either case..I haven't heard or seen any horror stories and anything but waxed flax packing, which does work fine...seems to be a bit better.
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Old 06-23-2014, 05:11 PM   #9
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Mike,

Compass Marine has posted a great How-To on Re-Packing A Traditional Stuffing Box. Be sure to read all three pages. It addresses several of the issues you face and might point you in the right direction regarding packing products and application methods.

Good luck!

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Old 06-23-2014, 05:22 PM   #10
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Nothing wrong with the old style packing but I prefer the gore stuff because it can be set up virtually drip free.
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Old 06-23-2014, 05:26 PM   #11
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I just had the yard repack my shafts with dripless goretex packing. The tech tightened it so no water came out. The first time out I checked the temps with the gun, 240F. I thought holy crap that not right. It wasn't leaking. When I got in I had the yard look at it again. The tech said he repacks dozens a year and it was done right but he loosed it to check how tight it was and it was correct. He did say my Chinese packing gland was very tight with the size of packing that fit the box. Anyway I checked it again the next time out and the box was only 110F and no leakage. I did get some black ooze out the gland when it ran itself in.
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Old 06-23-2014, 05:35 PM   #12
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I bet the nut was 240F; I held my hand under the nut and caught some of the water coming out, real hot but not boiling or close to it. Yes, I am tired of fiddling with this thing but it keeps the water out and the boat floating on top. What do y'all consider top of the line packing?
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Old 06-23-2014, 05:38 PM   #13
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Gore tex.
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Old 06-23-2014, 05:41 PM   #14
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Quote:
Originally Posted by Gulf Comanche View Post
I bet the nut was 240F; I held my hand under the nut and caught some of the water coming out, real hot but not boiling or close to it. Yes, I am tired of fiddling with this thing but it keeps the water out and the boat floating on top. What do y'all consider top of the line packing?

GORE® GFO® Packing
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Old 06-23-2014, 05:45 PM   #15
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It has been discussed here before an this seems to get the vote as some if not the best...

Duramax Shaft Sealing Systems

that all said..for a slow moving trawler shaft an oily rag would probably work...followed by wax flax, and just about everything with Teflon even waved in front of it is great and probably overkill...
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Old 06-23-2014, 05:48 PM   #16
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That's what the installed for me. There are four rings in my gland. It got hot on the first run in but was never adjusted. I have put 20 hours on it now and it doesn't drip and is cool. I would have thought the 240F I had would have been detrimental but it seem ok.
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Old 06-23-2014, 06:03 PM   #17
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Quote:
Originally Posted by psneeld View Post
It has been discussed here before an this seems to get the vote as some if not the best...

Duramax Shaft Sealing Systems

that all said..for a slow moving trawler shaft an oily rag would probably work...followed by wax flax, and just about everything with Teflon even waved in front of it is great and probably overkill...
I'm curious what the DuraMax shaft sealant cost to do 2 shafts? It looks like the next best thing to PSS Dripless systems.
Thanks,
Bill
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Old 06-23-2014, 06:21 PM   #18
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GFO is good up to 550F.

No worries
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Old 06-23-2014, 06:26 PM   #19
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Larry: I read the repacking article you recommended, the author is real big on drips coming out of the box. Seems like some of the guys here say yes to that, some no. I'll take some pictures of the box when I'm at the boat this week Thanks to all for the advice.
Mike
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Old 06-23-2014, 07:07 PM   #20
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I'd take it apart, remove the new packing, clean it well, repack it with GFO packing, adjust it to run cool and drip less and be done with it for the next several years or more.
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