Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-10-2015, 15:16   #16
Moderator
 
cabo_sailor's Avatar

Cruisers Forum Supporter

Join Date: Mar 2008
Location: Tarpon Springs FL
Boat: Cabo Rico 38
Posts: 1,905
Re: To drip or not drip stuffing box?

Over the years I've seen two boats at my marina take on enough water through the drip less shaft to cycle their bilge pumps every couple minutes. I contacted the owners and they were able to repair the problem.

Personally, I will stick with Teflon impregnated flax. No leaks at all at the dock and only a few drops comes through while motoring.


Sent from my iPhone using Cruisers Sailing Forum
__________________

__________________
cabo_sailor is offline   Reply With Quote
Old 06-10-2015, 15:25   #17
Registered User
 
Rustic Charm's Avatar

Join Date: Jun 2011
Location: Tasmania, Australia
Boat: Bieroc 36 foot Ketch
Posts: 4,898
Re: To drip or not drip stuffing box?

Quote:
Originally Posted by cabo_sailor View Post
Over the years I've seen two boats at my marina take on enough water through the drip less shaft to cycle their bilge pumps every couple minutes. I contacted the owners and they were able to repair the problem.

Personally, I will stick with Teflon impregnated flax. No leaks at all at the dock and only a few drops comes through while motoring.


Sent from my iPhone using Cruisers Sailing Forum

It's not a 'drip less', it's a 'dripless' seal.

And yes, if it's not fitted correctly, like mine, then it can drip. But it's not designed to and shouldn't. Correct fitting and maintenance will ensure peace of mind.
__________________

__________________
Rustic Charm is offline   Reply With Quote
Old 06-10-2015, 15:34   #18
Registered User
 
lateral's Avatar

Join Date: Apr 2011
Location: NZ
Boat: S34 Bob Stewart - 1959 Patiki class. Re--built by me & good mate.
Posts: 703
Re: To drip or not drip stuffing box?

Quote:
Originally Posted by cabo_sailor View Post
Over the years I've seen two boats at my marina take on enough water through the drip less shaft to cycle their bilge pumps every couple minutes. I contacted the owners and they were able to repair the problem.

Personally, I will stick with Teflon impregnated flax. No leaks at all at the dock and only a few drops comes through while motoring.


Sent from my iPhone using Cruisers Sailing Forum
By drip less, you mean PSS style?
Do you have a greaser with the teflon impregnated flax?
__________________
lateral is offline   Reply With Quote
Old 06-10-2015, 16:04   #19
Moderator
 
cabo_sailor's Avatar

Cruisers Forum Supporter

Join Date: Mar 2008
Location: Tarpon Springs FL
Boat: Cabo Rico 38
Posts: 1,905
To drip or not drip stuffing box?

Quote:
Originally Posted by Rustic Charm View Post
It's not a 'drip less', it's a 'dripless' seal.

And yes, if it's not fitted correctly, like mine, then it can drip. But it's not designed to and shouldn't. Correct fitting and maintenance will ensure peace of mind.

Blame autocorrect changes! And no there is no greaser. Just flax impregnated with Teflon.



Sent from my iPhone using Cruisers Sailing Forum
__________________
cabo_sailor is offline   Reply With Quote
Old 06-10-2015, 16:21   #20
Registered User
 
crazyoldboatguy's Avatar

Join Date: Apr 2014
Location: Chicago
Boat: Alden auxiliary ketch 48'
Posts: 857
Re: To drip or not drip stuffing box?

Quote:
Originally Posted by cabo_sailor View Post
Over the years I've seen two boats at my marina take on enough water through the drip less shaft to cycle their bilge pumps every couple minutes. I contacted the owners and they were able to repair the problem.

Personally, I will stick with Teflon impregnated flax. No leaks at all at the dock and only a few drops comes through while motoring.


Sent from my iPhone using Cruisers Sailing Forum

I wonder if the folks with the problem dripless seals either failed to "burp" their seals or didn't monitor the condition of the bellows type hose on the system. The only other way for water to get past the seal is if the 2 O-rings mounted on the inside of the SS donut are either not installed or are damaged during installation. The hoses are supposed to be replaced every 10 years - much like your thru hull hoses should be. Otherwise, given the design (decidedly NOT complicated) makes a failure unlikely. The system is in constant compression with the donuts pressing against each other without need for adjustment.
__________________
Outside of a dog, a book is a man's best friend.
Inside of a dog, it's too dark to read.
crazyoldboatguy is offline   Reply With Quote
Old 07-10-2015, 02:46   #21
Registered User
 
Rustic Charm's Avatar

Join Date: Jun 2011
Location: Tasmania, Australia
Boat: Bieroc 36 foot Ketch
Posts: 4,898
Re: To drip or not drip stuffing box?

Quote:
Originally Posted by cabo_sailor View Post
Blame autocorrect changes! And no there is no greaser. Just flax impregnated with Teflon.



Sent from my iPhone using Cruisers Sailing Forum
yep
__________________
Rustic Charm is offline   Reply With Quote
Old 07-10-2015, 02:50   #22
Registered User
 
Rustic Charm's Avatar

Join Date: Jun 2011
Location: Tasmania, Australia
Boat: Bieroc 36 foot Ketch
Posts: 4,898
Re: To drip or not drip stuffing box?

Quote:
Originally Posted by crazyoldboatguy View Post
I wonder if the folks with the problem dripless seals either failed to "burp" their seals or didn't monitor the condition of the bellows type hose on the system. The only other way for water to get past the seal is if the 2 O-rings mounted on the inside of the SS donut are either not installed or are damaged during installation. The hoses are supposed to be replaced every 10 years - much like your thru hull hoses should be. Otherwise, given the design (decidedly NOT complicated) makes a failure unlikely. The system is in constant compression with the donuts pressing against each other without need for adjustment.
I think that's correct. Unless someone has the problem I had with a bellows loosing compression, but it sounds like that was an exception.
__________________
Rustic Charm is offline   Reply With Quote
Old 07-10-2015, 05:19   #23
Wayfaring Mariner
 
captain58sailin's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Homer, AK is my home port
Boat: Skookum 53'
Posts: 4,045
Images: 5
Re: To drip or not drip stuffing box?

On a previous commercial fishing boat, I had two packing glands, which I replaced with the "dripless" style and I loved it, my prelaunch prep was taking a bucket of soapy water and pulling the bellows back pour it over both seals. I never had a failure in 7 years, and these units were located in the bottom of my fish hold so they ran in less than clean circumstances, once the fish were off loaded and the hold was cleaned, I never had any water coming in, gave me peace of mind when I had to leave the boat. On my current vessel, the first thing I looked at was replacing the greased packing gland with the PSS unit, however I didn't want to haul the boat out just for that. I've not had any problems with the grease gland either, so I don't know if I'll change it or not.
__________________
" Wisdom; is your reward for surviving your mistakes"
captain58sailin is offline   Reply With Quote
Old 07-10-2015, 05:24   #24
Registered User
 
Rustic Charm's Avatar

Join Date: Jun 2011
Location: Tasmania, Australia
Boat: Bieroc 36 foot Ketch
Posts: 4,898
Re: To drip or not drip stuffing box?

I don't know why but the instructions with the pss advise not to try to do the conversion with the boat in the water, but I'm fairly certain mine could have been done with the boat in the water. ?
__________________
Rustic Charm is offline   Reply With Quote
Old 07-10-2015, 05:35   #25
Wayfaring Mariner
 
captain58sailin's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Homer, AK is my home port
Boat: Skookum 53'
Posts: 4,045
Images: 5
Re: To drip or not drip stuffing box?

I have really small cojones, and I would be worried that if something didn't go right, I might have a problem keeping more water outside the boat than I allow in.
__________________
" Wisdom; is your reward for surviving your mistakes"
captain58sailin is offline   Reply With Quote
Old 07-10-2015, 05:38   #26
Moderator
 
weavis's Avatar

Cruisers Forum Supporter

Join Date: Feb 2014
Location: SEVILLE - MALLORCA
Posts: 10,132
Send a message via Skype™ to weavis
Re: To drip or not drip stuffing box?

Quote:
Originally Posted by Rustic Charm View Post
I don't know why but the instructions with the pss advise not to try to do the conversion with the boat in the water, but I'm fairly certain mine could have been done with the boat in the water. ?
Just because something can be done, it doesnt mean it should. Ive always found that when a large volume of water starts to come on the inside of a boat, there is a moment of clarity about why in the worst circumstances that could happen, its best to be on the hard.

My experience is with seacocks and specialist plugs that didnt plug and a foot of water in the bilges I didnt want...........

But yes, it can be done...
__________________
- Never test how deep the water is with both feet -
10% of conflicts are due to different opinions. 90% by the tone of voice.
Raise your words, not your voice. It is rain that grows flowers, not thunder.
weavis is offline   Reply With Quote
Old 07-10-2015, 05:44   #27
Moderator
 
Hudson Force's Avatar

Cruisers Forum Supporter

Join Date: Nov 2008
Location: Lived aboard & cruised for 45 years,- now on a chair in my walk-in closet.
Boat: Morgan OI 413 1973 - Aythya
Posts: 7,894
Images: 1
Re: To drip or not drip stuffing box?

It's great to share information here, but there's no reason not to have all the means to gain direct information while your underway.

I use a small hand-held, laser targeted temperature gauge. While operating I can view the temperatures of a carrier bearing half way between my engine and my stern tube and at my stuffing box (or now my new dripless shaft seal).

I know to expect between 125*F & 130*F at the bearing and I usually have 85*F to 90*F at the adjacent shaft. Having this baseline data allows me to indentify problems before they become severe.

'highly recommend these temperature "guns"!
__________________
Take care and joy, Aythya crew
Hudson Force is offline   Reply With Quote
Old 07-10-2015, 06:05   #28
Registered User

Join Date: May 2015
Location: Muskegon, Mi
Boat: Columbia 36
Posts: 187
Re: To drip or not drip stuffing box?

I have the Lasdrop that uses a rubber lip seal. It's been in the boat about ten years now and is still on the original seal. I have a spare but have not had to install it yet. It runs cool and doesn't drip at all. Very simple installation, no bellows, just the rubber seal in the housing and a split collar that can be removed with the shaft attached. It also only cost about $100 if I remember correctly. There is a water connection, but as posted above if you're under 10kn the hose just needs to extend to above the water line. The rubber seal looks just like an oil seal for an engine, pretty sure NAPA or the like would have them. I'm real happy with it.
__________________
capt jgw is offline   Reply With Quote
Old 10-10-2015, 11:47   #29
Registered User
 
Jon Neely's Avatar

Join Date: Aug 2009
Location: Cruising East bound to EU
Boat: Hans Christian 33
Posts: 283
Re: To drip or not drip stuffing box?

Gfo works great on our boat, have been using it for 2 years without issue.


Sent from my iPhone using Cruisers Sailing Forum
__________________
Watch Our Adventure on a HC33 at youtube.com/c/sailingvesselprism
Jon Neely is offline   Reply With Quote
Old 10-10-2015, 19:22   #30
Registered User

Join Date: Apr 2012
Location: Massachussetts
Boat: Cheoy Lee 47 CC
Posts: 700
Re: To drip or not drip stuffing box?

I work in a company which makes large industrial processing lines that use many heat transfer pumps in its function, the mechanical seals in those are the same type used on drip less shafts seals. They are quite resilient but will fail if not properly applied and maintained. I've had them on two boats I've owned and really liked them. I made sure they were properly aligned and set up, I burped them upon spring launch so as not to score them. Never had an issue. However, my present boat is being prepped for extensive cruising off the grid, I chose to keep its packing gland for its simplicity and ease of repair in the field. Depends on what your main use will be.

Sent from my SM-G900V using Cruisers Sailing Forum mobile app
__________________

__________________
lifeofreilly57 is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Changing stuffing box stuffing in water palm trees Propellers & Drive Systems 28 30-04-2015 10:50
Drip Drip Drip! Leaky Banjo Bolt BROTHER LOVE Engines and Propulsion Systems 33 26-10-2014 14:48
Stuffing box. Hot box. Free as a Bird Propellers & Drive Systems 8 05-08-2013 03:33
Is my stuffing box stuffing stuffed? resilientg Propellers & Drive Systems 8 01-08-2012 07:03
Stuffing box or re-stuffing the box / dripless Dave in Eugene General Sailing Forum 10 28-12-2007 16:45



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:44.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.