Adhesive of choice in this situation? - SailNet Community
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post #1 of 8 Old 01-06-2012 Thread Starter
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Adhesive of choice in this situation?

Happy New Year!

I need to bond a piece of metal to a piece of hard rubber. It might get some light spray now and then but mostly dry. Needs to be a pretty strong bond.

Epoxy? Any particular kind recommended?

5200? I wouldn't think this but I've heard tell of people using it to glue anything and everything. So I'm willing to try it if it bonds well.

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post #2 of 8 Old 01-06-2012
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What's it going to do, how much of a load are you going to put on the bond?
I would lean toward 5200 rather than any kind of an epoxy, but not knowing what the "hard rubber" actually is makes it difficult to know.

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post #3 of 8 Old 01-06-2012
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chart :

You are going to need something flexible, methinks. Epoxy tends to be a hard animal and does not like dissimilar stiffnesses. Try to set it up so that you avoid peeling loads. Direct and shear stresses are better tolerated.
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post #4 of 8 Old 01-07-2012
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Epoxy is likely to be brittle without some kind of additive.

5200 is what I would use.
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post #5 of 8 Old 01-07-2012
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If the joint needs to remain a bit flexible, you might consider 4200 rather than 5200. Also, I believe you need to apply some pressure (clamping etc.) for a good bond.
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post #6 of 8 Old 01-07-2012
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What type of load;
Compression, pulling, twisting?
What type of metal;
Stainless steel, bronze, aluminum,....
What type of hard rubber;
real rubber, synthetic rubber?

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post #7 of 8 Old 01-07-2012
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Is this lifesaving adhesion or decorative? The 5200/4200 recommendations are where my head is generically, but there are not enough details to give good advice.

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post #8 of 8 Old 01-07-2012
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I did a quick search and found this :

I also recently used some flexible epoxy for plastic, on my hypalon dinghy :

Marine Tex, epoxy resin, adhesives, silicone grease, engine treatment, cleaner, repair, bond, fill, seal, fiberglass, aluminum, plastics, Starboard, wood

Both those products state they will bond rubber and metal.

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