Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 17-03-2017, 13:48   #1
Registered User

Join Date: Jul 2011
Posts: 137
Gluing Hypalon (again)

Does anyone have the latest magical concoction for gluing hypalon? My leaks are small but persistent.

The glue they supply with the inflatable dries up in the tube. I have tried that automotive weather-stripping glue from 3M recommended elsewhere on the forum. It lasted about three weeks. 5200 seemed a good bet but the patch rubs right off if you catch it on a piling or under a painter, yours or someone else's at the dingy dock. Crazy glue lasted about an hour. Someone recommended contact cement but her dingy is as soft as a wet noodle. That two-part stuff isn't available in the islands and has a zero shelf life anyway... not much good for the cruiser. And as I write this, the word is still out on polysulfide but I expect the results to be similar to those of 5200.

And before someone goes off on the “surface preparation” tangent, I have spent many years in the marine industry using epoxies, paints, caulking, and sealants, so I am very familiar with surface prep.

If I ever get back to the States, I'll be looking for a good quality inflatable made from PVC. At least good old tire cement sticks to it.

If anyone has the secret to gluing hypalon I hope they will share with the rest of us.

Old marine dog, willing to learn...
Bry
__________________

bcripps is offline   Reply With Quote
Old 17-03-2017, 13:58   #2
Registered User
 
Cotemar's Avatar

Join Date: Dec 2007
Boat: Mahe 36, Helia 44 Evo, MY 37
Posts: 5,731
Re: Gluing Hypalon (again)

Contact Cement
__________________

Cotemar is offline   Reply With Quote
Old 18-03-2017, 03:16   #3
Moderator
 
Jim Cate's Avatar

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 16,153
Re: Gluing Hypalon (again)

the yottie glue of choice for Hypalon is Rema Tip-Top SC-2000 or SC-4000. These are industrial two partcontact cements, used for things like conveyor belt repair and gluing the rubber parts of motor mounts to the metal parts. It has shelf life of multiple years and is reasonably tolerant of high humidity during use. The difference between the two grades is in the solvents used. The one in SC-2000 has been judged carcinogenic in some countries, not in others. They perform much the same.

I don't know if they are available where you are,but most industrial supply houses can get it for you if they don't have it in stock.

Jim (who has used it for over two decades)
__________________
Jim and Ann s/v Insatiable II back in Port Cygnet doin' the isolation tango.
Jim Cate is offline   Reply With Quote
Old 18-03-2017, 06:02   #4
Registered User
 
Vasco's Avatar

Join Date: Apr 2004
Location: Toronto
Boat: CS36Merlin, "La Belle Aurore"
Posts: 7,497
Re: Gluing Hypalon (again)

Flexset

Sent from my SM-G532M using Cruisers Sailing Forum mobile app
__________________
Rick I
Toronto in summer, Bahamas in winter.
https://groups.yahoo.com/group/beneteau393/
Vasco is offline   Reply With Quote
Old 18-03-2017, 08:38   #5
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 18,747
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Gluing Hypalon (again)

2 part glue for hypalon. follow instructions. it will outlast the dinghy.
btdt.
__________________
life is an adventure meant to be LIVED!!!!
https://www.cruisersforum.com/forums...oul+mates.html


https://sksolitarybird.org/
zeehag is offline   Reply With Quote
Old 19-03-2017, 10:34   #6
Registered User

Join Date: Jul 2011
Posts: 137
Re: Gluing Hypalon (again)

Thanks guys. Truly appreciated the information.
...MIGHT be able to locate Cemento de Contacto here in “Niki” but, of coarse, none of the other suggestions will be available... even if I could convey my requirements into Spanish. (smile)

Anyway, that aside, I do appreciate the time you took to consider my problem. I'll just struggle along with what I got! As usual...

Bry
bcripps is offline   Reply With Quote
Old 19-03-2017, 15:06   #7
Moderator
 
JPA Cate's Avatar

Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 18,470
Re: Gluing Hypalon (again)

bcripps, I don't know where "Niki" is, but if 3M 5200 is available there, it is an option. It will be poorer, because the drying time is long so that you'd have to face up to swimming ashore for 5 or 7 days, but it will bond okay to hypalon. The SC products, have to set up a bit before full inflation, but adequate inflation to use the dinghy happens within an hour or so. Even SC 2000 has to build bond strength. Once you have stuck it down, it will not move again. We use the waxed paper method of separating the two pieces till you have it lined up, and then smooth the patch down. As you undoubtedly know, masking helps, and we also use "strike up" marks.
__________________
Who scorns the calm has forgotten the storm.
JPA Cate is offline   Reply With Quote
Old 19-03-2017, 16:16   #8
Moderator
 
Jim Cate's Avatar

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 16,153
Re: Gluing Hypalon (again)

Quote:
Originally Posted by bcripps View Post
Thanks guys. Truly appreciated the information.
...MIGHT be able to locate Cemento de Contacto here in “Niki” but, of coarse, none of the other suggestions will be available... even if I could convey my requirements into Spanish. (smile)

Anyway, that aside, I do appreciate the time you took to consider my problem. I'll just struggle along with what I got! As usual...

Bry
Regular one-pot contact cement, the kind that cures by evaporation, will not stand up very long at all. The bond strength is simply not good enough. If you are prepared to re-do the patch frequently, you might get along ok.

Good luck... from someone who has nursed very tired Hypalon dinks along far past their use-by dates.

Jim
__________________
Jim and Ann s/v Insatiable II back in Port Cygnet doin' the isolation tango.
Jim Cate is offline   Reply With Quote
Old 24-03-2017, 09:55   #9
Registered User

Join Date: Jul 2016
Location: South Carolina
Boat: 17' Boston Whaler
Posts: 20
Re: Gluing Hypalon (again)

I can offer a different perspective for you on hypalon patch work. I worked as a whitewater boatman on the Colorado river for some years, and maintaining hypalon rafts is all part of the job. Hypalon uses a mechanical bond. PVC material uses a chemical bond. Two completely different techniques. For hypalon we used the stabond brand which comes with a dark brown liquid accelerator. The so called accelerator is an additive which accelerates nothing. It does however increase the temperature at which the glue will become soft and fail. Use the accelerator in tropical environments. There is no downside. Best case is for materials to be in the shade while patching and remain there for at least a day in order for solvents to release properly. Too hot and glue will boil and bubble underneath the patch, rendering weaknesses. First a light coat on both surfaces. Wait an hour then put second light coat. Wait an hour and lay down third light coat. Wait 15 minutes and stick them together. After an hour, knead the patch down hard again. Do that again the next day. Wait as long as you can, a day or two will do in the shade, then bring to low pressure and dinghy about. Try to avoid full pressure for a week as this is how long it takes the glue to fully cure. I know all this time isn't what any of us wants to hear, but this is best case for a bomb proof hypalon bond. Make sure no threads are showing on either glued surface. Threads weaken the bond but often it still works.
Note: accelerator is methylated isocyanate, the chemical which killed 4,000 in Bhopal. Please be mindful of the little brown bottle.
bruc is offline   Reply With Quote
Old 24-03-2017, 09:59   #10
Registered User

Join Date: Jul 2016
Location: South Carolina
Boat: 17' Boston Whaler
Posts: 20
Re: Gluing Hypalon (again)

Addendum: I mean to suggest three light coats of glue on both surfaces. Also, Dust is the enemy of all raft repair.
bruc is offline   Reply With Quote
Old 02-05-2020, 18:05   #11
Registered User
 
flyingfin's Avatar

Join Date: Oct 2016
Location: Cape Haze,FL
Boat: Carver,Cobia,Nacra, Columbia
Posts: 512
Re: Gluing Hypalon (again)

Quote:
Originally Posted by bruc View Post
Addendum: I mean to suggest three light coats of glue on both surfaces. Also, Dust is the enemy of all raft repair.
I used 3 coats Contact Cement to glue rub rail back on my Nautica - Failed after 4 months. Tried again, this time used one first coat thinned with Xylene. let dry 30 min, then second coat slightly thinned, let dry 10 min. Stuck hard. Will see how long this lasts. Both times in 75 degree weather with humidity under 50%. But my patch over hole in tube was done with Rema 203-F Cold Vulcanizing,,,,,,been 6 months and not problems, sealed tight in 48 hours.
flyingfin is offline   Reply With Quote
Old 03-05-2020, 09:47   #12
Registered User

Join Date: Jan 2008
Location: SF Bay Area (Boat in La Paz)
Boat: Valiant V40
Posts: 717
Re: Gluing Hypalon (again)

I've had mixed results with various hypalon glues. Last time I decided to try the interior sealant. Three years ago and all is well, and we do fold up the dink for stowage.
jamhass is online now   Reply With Quote
Old 03-05-2020, 10:00   #13
Registered User

Join Date: Oct 2014
Boat: Morgan, West Indies 38 Ketch
Posts: 178
Re: Gluing Hypalon (again)

I ran over a submerged 4x4 piling in the estuary in Bahia Del Sol, El Salvador. Ripped a 4-5 gash in the bottom of the boat. Was able to get scrap of hypalon from other cruiser and had another cruiser fly down glue from states.
NEVER AGAIN.
Built a nesting dinghy sold the inflatable and motor and walked away.

It’s easy to maintain and fix and only requires a 3.5 outboard to get on plane.
http://www.mytripjournal.com/travel-...xy-horse-power
__________________

akopac is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Gluing Neoprene to Ceramic Dishes ? SvenG Provisioning: Food & Drink 8 08-02-2010 07:28
Gluing Numbers Onto Hypalon Dinghy bene505 Construction, Maintenance & Refit 4 05-08-2009 19:15
Gluing Hypalon to Fiberglass witzgall Construction, Maintenance & Refit 3 27-01-2009 09:03
gluing plastic together / lavac head rebel heart Construction, Maintenance & Refit 4 24-11-2008 22:10
gluing down laminate floor schoonerdog Construction, Maintenance & Refit 9 18-03-2007 14:07

Advertise Here


All times are GMT -7. The time now is 07:49.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.