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serpa4
Joined: 13 Nov 2022 Posts: 86 City/Region: Melbourne
State or Province: FL
C-Dory Year: 2018
C-Dory Model: 26 Venture
Vessel Name: DayLo
Photos: DayLo
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Posted: Tue Apr 25, 2023 9:58 am Post subject: White pastes I see on water hoses, sewer hoses, and such? |
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What is the white paste used to help seal hoses on barbs like the raw water pump, sewer lines, etc.?
I've seen white paste used for "threaded" pipes, but not sure what the goo is that is on hoses with barbs. It seems pliable after years of being on my old hoses; still tackey.. _________________ 2018 C-Dory Venture 26. Suzuki DF200A,autopilot, solar, 412ahr of lithium. |
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thataway
Joined: 02 Nov 2003 Posts: 20829 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Tue Apr 25, 2023 11:30 am Post subject: |
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I cannot speak to the practice in 2018, but earlier in the C Dory history, the factory put one of the Bostek Sealants on the hose barbs. I guess they felt that that give more security on the connection. The standard practice should be double clamp hoses to the thru hull fittings. I don't know how well this material (similar to 3M 4000) sticks to the fittings, or tubing. This is either the same or very similar to the material they used to seal the cabin top to the cabin side walls (as well as one layer of tabbing). The reason I know about this is when I received my Tom Cat 255, there was no caulking between the cabin top and sides. C Dory sent me 9 tubes of this sealant.
An aside, I have had issues with some hose barbs and tubing; for this I used "form a gasket" by Permatex, #2, (non hardening, approved for air craft). This works well in critical conditions, but with heat it will loosen. I am not sure about heat on the material which C Dory used. You may want to contact the factory. _________________ Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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Robert H. Wilkinson
Joined: 26 Jan 2011 Posts: 1235 City/Region: Port Ryerse
State or Province: ON
Vessel Name: Romakeme IV
Photos: Romakeme IV
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Posted: Tue Apr 25, 2023 2:06 pm Post subject: |
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thataway wrote: | I have had issues with some hose barbs and tubing |
When removing old hose some techs will slice it length wise down the barb with a razor knife. This can score the peaks of the barb and under pressure I have seen it leak even well clamped.
Rob _________________ Talk to me and I will listen-- but if its not about boats or fishing all I will hear is bla,bla,bla,yada,yada,zzzzzzzz |
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drbridge
Joined: 25 Jun 2014 Posts: 220 City/Region: Sequim
State or Province: WA
C-Dory Year: 2004
C-Dory Model: 22 Cruiser
Vessel Name: Susan Marie
Photos: Susan Marie
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Posted: Tue Apr 25, 2023 5:54 pm Post subject: |
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Standard pipe thread Teflon pipe sealant is often used on barbed fittings. It does two things. It acts as a lubricant to help a tight hose slide over the barb and it also helps to seal the fitting once it is clamped tight. _________________ Doug & Susan |
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serpa4
Joined: 13 Nov 2022 Posts: 86 City/Region: Melbourne
State or Province: FL
C-Dory Year: 2018
C-Dory Model: 26 Venture
Vessel Name: DayLo
Photos: DayLo
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Posted: Tue Apr 25, 2023 7:51 pm Post subject: |
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drbridge wrote: | Standard pipe thread Teflon pipe sealant is often used on barbed fittings. It does two things. It acts as a lubricant to help a tight hose slide over the barb and it also helps to seal the fitting once it is clamped tight. |
Thanks. Will use that Teflon paste to assist. |
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forrest
Joined: 02 Nov 2003 Posts: 381 City/Region: Chehalis
State or Province: WA
C-Dory Year: 2007
C-Dory Model: 26 Venture
Vessel Name: Long Story
Photos: Long Story
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Posted: Wed Apr 26, 2023 10:49 am Post subject: |
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Boil a pan of water on your stove. Dip the end of the hose in the pan of hot water for a minute or two. The hose will slip right over the barbs while hot and supple. Tighten the clamp on the soft end of the hose over the barbs. It will won't leak. |
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tsturm
Joined: 01 Nov 2003 Posts: 1134 City/Region: Soldotna
State or Province: AK
C-Dory Year: 2003
C-Dory Model: 25 Cruiser
Vessel Name: JMR TOO
Photos: JMR-TOO
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Posted: Wed Apr 26, 2023 8:46 pm Post subject: |
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forrest wrote: | Boil a pan of water on your stove. Dip the end of the hose in the pan of hot water for a minute or two. The hose will slip right over the barbs while hot and supple. Tighten the clamp on the soft end of the hose over the barbs. It will won't leak. |
I use a heat gun.
What ever was used at the factory in 2003 on all the hose barbs I have found pieces of it in the valves of my fresh water pump.
Bad idea to use any sealant on a hose barb. As far as scoring a barb so bad removing a hose that a clamp won't seal, if it leaks replace it!
If you can't push a new hose on a barb warm it up.
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