Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-25-2018, 05:35 AM   #1
Senior Member
 
BrisHamish's Avatar
 
City: Brisbane
Country: Australia
Vessel Name: Beluga
Vessel Model: Grand Banks 46eu 2006 hull#289
Join Date: Apr 2016
Posts: 147
Welcome thoughts please - shaft seals - Tides Marine or PPS?

Hi everybody from Brisbane, Australia.

I need some new shaft seals (long story, please don’t ask, its too soon...), and the candidates are Tides Marine or PPS. The cost is about the same, but if I am buying new ones I prefer to try and choose wisely.

Your views pls. Good, bad, ugly or anything else?

For PPS, I would either need type A or the new ‘Pro’ model.

Thanks in advance to everyone.

H.
__________________
Advertisement

BrisHamish is offline   Reply With Quote
Old 07-25-2018, 05:42 AM   #2
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 19,506
To me "shaft seals " are old outdated tech.

A std stuffing box with Duramax . or similar seems to have no flaws for our sized boats.
__________________

FF is offline   Reply With Quote
Old 07-25-2018, 07:30 AM   #3
Guru
 
O C Diver's Avatar
 
City: Fort Myers, FL... Summers in Crisfield, MD
Country: USA
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 7,409
I have the PSS system on two boats. My charter boat has had it for 13+ years with around 5,000 engine hours. Have replaced the bellows once as I felt it was time. Had Tides seals on the shaft and rudder on my trawler. Switched the shaft seal to a PSS as I liked the seal wear area off the shaft better. The rudder seal is still a Tides. Will be replacing the seal this fall as it occasionally weeps. It's 16 years old, so it's time. Nothing else will fit there without major modifications, so I'll put the same back.

Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
O C Diver is offline   Reply With Quote
Old 07-25-2018, 07:35 AM   #4
Guru
 
City: LI or Fla
Country: USA
Join Date: Jul 2013
Posts: 1,093
Cannot speak to Tides, but we have PSS for 20 years, close to 3000 hours and no issues.
Marlinmike is offline   Reply With Quote
Old 07-25-2018, 11:27 PM   #5
Guru
 
kapnd's Avatar
 
City: hawaii
Country: usa
Vessel Name: #31
Vessel Model: ex-Navy MUB 50 fish/cruise
Join Date: Aug 2013
Posts: 529
I’m with Fred on the old fashioned shaft seal gland stuffed with modern Teflon packing. They are Ultra reliable, drip free and user friendly.
Dripless shaft seals work fine, until they fail, Mr. Murphy will have something to say about when and where, and good luck with repairs at sea!
__________________
You can lead a horse to water,
But you can't make him ski...
kapnd is offline   Reply With Quote
Old 07-26-2018, 02:40 AM   #6
Guru
 
BruceK's Avatar
 
Join Date: Oct 2011
Posts: 9,795
Quote:
Originally Posted by FF View Post
To me "shaft seals " are old outdated tech.
A std stuffing box with Duramax . or similar seems to have no flaws for our sized boats.
Stuffing boxes seem to have 2 types,(though there may be others).
1. The type with 2 large narrow hard to hold nuts, as large as or greater than the circumference of the "box".
2. The type held together by 2 longitudinal bolts,tightened with nuts requiring common size spanners.
The former is a PITA to adjust,especially as often well buried. The latter looks relatively easy to adjust. If it was a contest between 1 above and a seal, I`d go for the seal. If 2 above, the old "box" method might very well be preferable.
I suspect it will be easier to replace a seal with a seal,than change the system. As in the OP`s current thinking.
__________________
BruceK
Island Gypsy 36 Europa "Doriana"
Sydney Australia
BruceK is offline   Reply With Quote
Old 07-26-2018, 05:35 AM   #7
Guru
 
boatpoker's Avatar
 
City: Port Credit
Country: Ontario
Vessel Name: DIRT FREE
Vessel Model: Benford Fantail 38
Join Date: Sep 2012
Posts: 2,446
We installed a Lasdrop GenII about two years ago and like it much better than the PYI as it does not use bellows, instead it has much longer lasting silicone hose.
Attached Thumbnails
Click image for larger version

Name:	IMG_2482.JPG
Views:	62
Size:	107.0 KB
ID:	79013  
__________________
If you can live with the consequences, go for it - wg
Y'am what y'am an' thats' all that y'am - Popeye
I had an allergic reality - Jillie the Bean
boatpoker is online now   Reply With Quote
Old 07-26-2018, 05:51 AM   #8
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 19,506
"I’m with Fred on the old fashioned shaft seal gland stuffed with modern Teflon packing."

Teflon has a problem in that it is quite hard , so a metal flake iff the shaft can be captured and will wear the shaft.

The more modern packing does not have this flaw.
FF is offline   Reply With Quote
Old 07-26-2018, 05:55 AM   #9
Senior Member
 
City: Green Cove Springs, Florida
Country: USA
Join Date: Feb 2012
Posts: 307
Send a message via Skype™ to bglad
PSS or Tides Marine are low maintenance when working properly but might prove to be a problem if you do not have convenient access to haul-out facilities. Also, may not tolerate the wobble of a bent shaft or engine misalignment as well as a regular packing gland.

Here are some things I have noticed regarding your two choices:

Tides Marine seem to be consistently reliable eventually dripping providing warning they are giving up. Spare seals can be installed on shafts, so they can be replaced on the run. They do not seem to sling water as they leak which avoids corroding everything around them.

PSS shaft seals seem a little more robust but if your boat sits a lot they may build up corrosion on the collar face and leak until they get some running time on them. If the bellows tension is not adequate they unload and shower the engine room. Make sure you do a full power run after installation. I have come behind some new installations that apparently skipped this step and required further adjustment. I suggest a spray shield since in almost every case there is a black ring in the bilge around them where a very slight leakage is spun outward. A circular disc of black oxides and salt that can make a mess in your tidy engine space corroding metal and fuzzing wood.
bglad is offline   Reply With Quote
Old 07-26-2018, 07:24 AM   #10
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 3,420
I have installed Tides seals on two boats. 7 years on the first and 12 seasons on my current boat. Never had a problem on either.
jleonard is online now   Reply With Quote
Old 07-26-2018, 07:45 AM   #11
Senior Member
 
City: Green Cove Springs, Florida
Country: USA
Join Date: Feb 2012
Posts: 307
Send a message via Skype™ to bglad
Regarding my comments below about Tides Marine seals I should have said "if" they leak. It is inevitable but based upon my experience not typical until they are at end of life.

Quote:
Originally Posted by bglad View Post
PSS or Tides Marine are low maintenance when working properly but might prove to be a problem if you do not have convenient access to haul-out facilities. Also, may not tolerate the wobble of a bent shaft or engine misalignment as well as a regular packing gland.

Here are some things I have noticed regarding your two choices:

Tides Marine seem to be consistently reliable eventually dripping providing warning they are giving up. Spare seals can be installed on shafts, so they can be replaced on the run. They do not seem to sling water as they leak which avoids corroding everything around them.

PSS shaft seals seem a little more robust but if your boat sits a lot they may build up corrosion on the collar face and leak until they get some running time on them. If the bellows tension is not adequate they unload and shower the engine room. Make sure you do a full power run after installation. I have come behind some new installations that apparently skipped this step and required further adjustment. I suggest a spray shield since in almost every case there is a black ring in the bilge around them where a very slight leakage is spun outward. A circular disc of black oxides and salt that can make a mess in your tidy engine space corroding metal and fuzzing wood.
bglad is offline   Reply With Quote
Old 07-26-2018, 08:01 AM   #12
Senior Member
 
Panacea123's Avatar
 
City: Cape Coral, Fl
Country: Usa
Vessel Name: Panacea
Vessel Model: Novatec 42 Sundeck Trawler
Join Date: Jul 2016
Posts: 139
Had PSS seals boat is a 2002 I’ve owned for 3 years.
Had a rattle I could never find.
Recent haul out I had them checked, yard said they were done and badly worn, no adjustment left. Never leaked but was always afraid of a failure.
Was going to go with traditional packing but was talked into Tides.
Installed 2 extra seals which can be changed in the water.
Rattle gone! Could have been a disaster in the making.
The lack of being able to service PSS in the water concerned me as I travel the Bahamas for extended periods where haul out is not readily available.
In hind sight i wish I would have gone with my first instinct, traditional packing.
Have done many in water packing replacements over the years.
The ability to change Tides with an extra seal is a nice feature, but I have to wonder if the extra seals will be dried out by the time I need them?

All that being said PSS have a good rep and have not heard of many issues.
__________________

Panacea123 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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





All times are GMT -5. The time now is 07:43 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012