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Answers : Technology

What glue can I use to stick silicone to plastic?

Plastic is easy, lots of stuff sticks to plastic, but the only thing that seems to stick to silicone is more silicone. Hot glue, super glue, Elmer's glue, Gorilla glue, and liquid steel epoxy all fail. Any suggestions? Maybe something marine related? (Background: I used some left over silicone molding compound to make a comfy handle, but it doesn't want to stay on.)

8 answers	Answer it!

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Sep 2, 2009. 12:54 AM

steveastrouk says:

Silicone can be glued, but you often need a special "surface activator" chemical to prepare the silicone and the substrate to be bonded. People like Permabond and Loctite can do them.

Nov 4, 2011. 12:38 PMTalo199 says:

Try this: http://www.smooth-on.com/Epoxy,-Silicone-an/c11_1189/index.html?osCsid=rroncsv8o31mujcl356i421do5

Works great!

Feb 25, 2011. 3:38 PMFiction says:

While this is most likely a dead thread, other sources on the web say that you can glue to silicone using 3M yellow weatherstripping and gasket adhesive.

I am posting this to say that it does not work. It peels off effortlessly. Don't waste your time.

Feb 26, 2011. 7:44 PMFiction says:

As a follow up, Devcon Silicone Adhesive works fantastically. I have the verson with 310 PSI bond strength, and though I was looking for the 700 PSI version, 30 minutes of cure have created a bond stronger than than the 1/4" silicone I was gluing.

I am gluing silicone foam to an insole... probably a nylon-based fabric. No sanding or prep was given to the silicone before gluing, other than it being visually clean.

Feb 12, 2011. 1:42 AMlabomed says:

try using E6000 glue. However, I am looking for a glue that is electrically conductive and glues Plastic to silicone