Page 1 of 3 123 LastLast
Results 1 to 15 of 37

Thread: Neoprene or Nitrile... and how to weld/fuse/join either of them

  1. #1
    Join Date
    Feb 2017
    Location
    Rochester, NY
    Posts
    130

    Neoprene or Nitrile... and how to weld/fuse/join either of them

    I am working on a project where I need to somehow glue or fuse two pieces of ~1/32 rubber. I need to join them because a thin rare earth magnet disc needs to be between them that is completely sealed from potential water exposure.

    I have narrowed the potential materials down to neoprene or nitrile. I need a material that is roughly the durometer and elasticity of a rubber band and that is available in more colors than tan/black.

    If you have any suggestions about a better material to use, or a way to join them it would be greatly appreciated.

    thanks,
    DW

  2. #2
    Join Date
    Mar 2003
    Location
    San Francisco, CA
    Posts
    10,304
    Rubber cement comes to mind. It can seal punctures in car tires, or patch inner tubes.

  3. #3
    Join Date
    Feb 2003
    Location
    McKean, PA
    Posts
    15,596
    Blog Entries
    1
    Loctite 404 is used to make o-rings from extruded round rubber.
    Lee Schierer
    USNA '71
    Go Navy!

    My advice, comments and suggestions are free, but it costs money to run the site. If you found something of value here please give a little something back by becoming a contributor! Please Contribute

  4. #4
    Join Date
    Jun 2012
    Location
    New Westminster BC
    Posts
    2,981
    Not sure about gluing or fusing the two pieces of rubber, but how about coating the magnets in silicone to seal them? Then if the bond in the rubber fails you still have the magnet sealed.

  5. #5
    Join Date
    Feb 2017
    Location
    Rochester, NY
    Posts
    130
    thanks for the responses. The two pieces cannot come apart otherwise the magnets would fall out. The adhesive needs to have a little flexibility to it as the rubber they are glued to are quite flexible.

  6. #6
    Join Date
    Jan 2004
    Location
    Lewiston, Idaho
    Posts
    28,504
    What about dipping the magnets in the rubber insulating liquids available for tool handles?
    Ken

    So much to learn, so little time.....

  7. #7
    Join Date
    Feb 2017
    Location
    Rochester, NY
    Posts
    130
    ultimately I would like to coat the two pieces of rubber with X solvent and they melt together... Prob not that easy.

  8. #8
    How big are the disks? If not too large, use two tire patches. But as Henry Ford said. "Available in any color as long as it's black."

  9. #9
    Join Date
    Feb 2017
    Location
    Rochester, NY
    Posts
    130
    the magnets don't need to be discs. I am guessing they will be either 1/16" or 1/32" thick. ~.5" dia. The rubber will also be about this thick, or 1/32"

  10. #10
    Join Date
    May 2008
    Location
    Peshtigo,WI
    Posts
    1,395
    I'd use some Loctite 380 Black Max to glue the pieces together. We use it at work for gluing neoprene to steel. It's quick and easy, just keep your fingers out of the way.
    Confidence: The feeling you experience before you fully understand the situation

  11. #11
    Join Date
    Jul 2017
    Location
    TX / LA border.. Toledo Bend
    Posts
    746
    FLEX SEAL !!!!


    JK, I would look into the two Loctite product ideas above. Marc

  12. #12
    Join Date
    Jul 2017
    Location
    TX / LA border.. Toledo Bend
    Posts
    746
    https://www.google.com/search?q=neop...hrome&ie=UTF-8

    I especially liked the "Practical Machinist" threads. Marc

  13. #13
    Join Date
    Feb 2017
    Location
    Rochester, NY
    Posts
    130
    two things I don't think I mentioned/emphasized:
    -The adhesive will have to remain flexible
    -It will have to stay strong through many cycles in a dish washer

    The latter is what I am most skeptical about with an adhesive, unless I am underestimating them

  14. #14
    Join Date
    May 2005
    Location
    Highland MI
    Posts
    4,511
    Blog Entries
    11
    Gorilla urethane adhesive? I used some of their construction adhesive to re-glue the ceramic mosiac trim ring inside my hot tub. Only readily available adhesive (including silicones) I could find that didn't say "not for continuous immersion". So far, so good after five months in 102 degree water.
    NOW you tell me...

  15. #15
    Join Date
    Feb 2017
    Location
    Rochester, NY
    Posts
    130
    is the urethane adhesive flexible?

    Also, how thick/goopy is it? The two pieces I am joining are flat and thin and if the material I am using to join them is thick then the neoprene pieces will probably not stay flat... Just a thought.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •