Neoprene Rubber gluing?

[ArlyA]

I've got some Neoprene Rubber pieces I need to glue together. This is not foam but solid belting. According to the internet, many contact cements are suppose to work on it but I've tried 2 and both didn't do much for its attachment. Just for fun I also tried rubber vulcanizing chemical, vinyl glue and muti use PVC type cement. Not! I also tried silicone type glue but it takes 24 hours to set so I'm not yet able to try pull it apart. I also emailed the retailer and asked them what to glue it with.

 

[Fuddyduddy1952]

Try Super glue?

 

[groundcover]

I would reach out to a roofing company that does membrane roofs, they probably have just the thing.

 

[ArlyA]

I would reach out to a roofing company that does membrane roofs, they probably have just the thing.

Are they using Neoprene? I'll I'm familiar with is vinyl roofing which is heated for its bond.

 

[groundcover]

They also use a rubber membrane , lots of different options.

Rubber Roofing Explained: Cost, Types, Pros, and Cons

Discover the cost, types, benefits, and drawbacks, of rubber roofs both an essential flat roofing material and sustainable alternative to shingles.

www.fixr.com

 

[jjeff]

A very clean surface, try using rubbing alcohol liberally to clean well, and applying lots of pressure for atleast a few hrs on what your trying to glue, it's worked for me most of the time.

 

[ArlyA]

A very clean surface, try using rubbing alcohol liberally to clean well, and applying lots of pressure for atleast a few hrs on what your trying to glue, it's worked for me most of the time.

I have cleaned with alcohol between attemps and changed out my cleaning rags..... For the silicone type glue I appiled tonight I rouged it up via sand paper before the attempt..

 

[JasperFrank]

Find out how they seal pond liners together?

 

[jjeff]

I have cleaned with alcohol between attemps and changed out my cleaning rags..... For the silicone type glue I appiled tonight I rouged it up via sand paper before the attempt..

Is it possible to setup clamps using blocking backers of some type to apply lots of pressure to what your trying to glue?

 

[ArlyA]

Is it possible to setup clamps using blocking backers of some type to apply lots of pressure to what your trying to glue?

Well it is but I'm now just trying it on little chunks to see if something works. I do put my drill index on it for some pressure but the pieces are only about 2 x 2" in size.

 

[jjeff]

A very knowledgeable old timer once told me if glue is to work you need to get as much air out of what your trying to bond by applying lots of pressure, It usually works for me.

 

[etpm]

Well it is but I'm now just trying it on little chunks to see if something works. I do put my drill index on it for some pressure but the pieces are only about 2 x 2" in size.

As the previous poster Fuddyduddy1952 posted, super glue could be tried. Super glue, which is a cyanoacrylate adhesive, forms a great bond with neoprene rubbers. Are you trying to make a butt joint? If so I don't think any of the super glues will work. But there are some that incorporate neoprene rubber in the adhesive itself and they will probably work for a lap joint. So, if you are using a lap joint, which is the only type of joint I have ever used when joining belting, I think a super glue made for joining rubber would work very well. See the links below for adhesives that may work for you.

Vibra-Tite 310 Rubber Toughened – Gap Filling Cyanoacrylate | Vibra-Tite

www.vibra-tite.com

https://www.amazon.com/YUE-Adhesive-bonding-Between-Material/dp/B09NCBB9CM/ref=asc_df_B09NCBB9CM/?tag=hyprod-20&linkCode=df0&hvadid=565009227740&hvpos=&hvnetw=g&hvrand=15229209892883171892&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9033364&hvtargid=pla-1599267394286&psc=1

https://www.amazon.com/Loctite-48040-Instant-Adhesive-Toughened/dp/B000HZOHHU/ref=asc_df_B000HZOHHU/?tag=hyprod-20&linkCode=df0&hvadid=198057004211&hvpos=&hvnetw=g&hvrand=8152602753765128770&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9033364&hvtargid=pla-349634146250&psc=1

There are many other rubber toughened cyanoacrylate adhesives available that would probably work for you but I don't know your particular situation. For sure if you want the best bond then you must make sure that the area to be bonded is very clean. No oils can be present. No dust either. I have seen many bond failures occur because the bond area was not properly cleaned. I have cheated a few times when it came to cleanliness and paid the price of a failed bond. I learned my lesson and have not had a failed bond for at least 40 years. I am very careful now and make sure the area to be bonded is absolutely clean. I learned to be patient and do the job correctly. I use the correct bonding agent too. For some reason that always seems to help.
Eric

 

[Alan W.]

Find out how they seal pond liners together?

They are heat welded together just like the liners in landfills.

 

[mrmikey]

I can't remember the name of the stuff we used when making neoprene gaskets but I do remember it was a two part and it was in a green can and came with a glass bottle which was the hardener. Ask me how I know it was glass . Sorry I can't remember the name.
Instead of a butt joint you'd be better off scarfing it, give you more gluing area

 

[ArlyA]

As the previous poster Fuddyduddy1952 posted, super glue could be tried. Super glue, which is a cyanoacrylate adhesive, forms a great bond with neoprene rubbers. Are you trying to make a butt joint? If so I don't think any of the super glues will work. But there are some that incorporate neoprene rubber in the adhesive itself and they will probably work for a lap joint. So, if you are using a lap joint, which is the only type of joint I have ever used when joining belting, I think a super glue made for joining rubber would work very well. See the links below for adhesives that may work for you.

There are many other rubber toughened cyanoacrylate adhesives available that would probably work for you but I don't know your particular situation. For sure if you want the best bond then you must make sure that the area to be bonded is very clean. No oils can be present. No dust either. I have seen many bond failures occur because the bond area was not properly cleaned. I have cheated a few times when it came to cleanliness and paid the price of a failed bond. I learned my lesson and have not had a failed bond for at least 40 years. I am very careful now and make sure the area to be bonded is absolutely clean. I learned to be patient and do the job correctly. I use the correct bonding agent too. For some reason that always seems to help.
Eric

I'm laying two pieces over each other. Since this neopere belting will be flexing, this stuff might work.

Vibra-Tite 310 Rubber Toughened – Gap Filling Cyanoacrylate​

 

[Seven Gables]

3M super weatherstrip adhesive. Clean both pieces with isopropyl alcohol, apply a thin layer to both pieces holding the tube perpendicular with nozzle Flat to the neoprene squeeze gently while moving the nozzle to coat . Let it dry for about 5 minutes then stick together with good pressure.

 

[ArlyA]

The retailer did get back with me with a suggestion AND it seems the silicone type glue I applied last night seemed to have gripped. I work all day guys so I will later report on what they suggested and how well that stuff worked.

 

[ArlyA]

3m Neoprene High Performance Rubber and Gasket Adhesive 1300L is what they recomend. I can't find a 5oz tube of it for less than $25...

 

[etpm]

3m Neoprene High Performance Rubber and Gasket Adhesive 1300L is what they recomend. I can't find a 5oz tube of it for less than $25...

If that's the stuff they recommend then that's what I would use. Even at 25 bucks. But apparently you already used silicone adhesive. I hope it does work. If it fails and you want to use another adhesive you will need to remove ALL of the silicone adhesive in order to get a proper bond. I guess, since you have already glued the belting, we will wait for a report from you telling us all how well the silicone worked. It sounds like you are not gonna use the belting for belts, so maybe the best bond won't matter.
Eric

 

[ArlyA]

I could pull the test halves apart, but certainly far better bonding than all the other glues I've tried. I ordered the below glue from amazoine which will be arriving on Friday. Maybe I'll find some of this 3m Neoprene High Performance Rubber and Gasket Adhesive to order.

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GEAR AID Aquaseal NEO Contact Cement for Neoprene and Wetsuit Repair

$7.95 ($5.30 / Fl Oz)