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Bonding rubber to steel?

StolenFox

Well-known member
Joined
May 19, 2013
Messages
91
So I am building my radiator brackets for my BMW and I'm using rubber strips as isolators. I'd like to bond the rubber (0.25" strips cut from a tire sidewall) to the steel brackets but I'm not sure what to use. The "glue" must be able to withstand the heat coming off the radiator. I was thinking that the black urethane window weld from 3M. Suggestions?

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Thanks!

S.F.
 
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airrj

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Joined
Apr 4, 2008
Messages
137
Location
Wide Wonderful Wyoming
I have used urethane as well with success. And I am glad to see that 1" strap works just as well for a radiator mount in a BMW as it does in a '72 Chevelle.
 

countryroad82

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Joined
Mar 18, 2011
Messages
3,447
Location
Kentucky
I was going to say either weatherstrip adhesive or windshield urethane. So I got beat to the punch! Unless you have a tube already open or a few other things to glue, I believe I would try the weatherstrip adhesive first because the urethane doesn't keep all that well. But that's the cheapskate in me talking!
 
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kunkernator

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Joined
Sep 27, 2012
Messages
2,438
Location
US of A
I would make a mold and overmold the rubber. If you dont want to spend the money on a 2 part mixture, just use some RTV tubes.
 

four.cycle

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Joined
Oct 19, 2015
Messages
28,841
Location
Tacoma, Washington
I've used "Pliobond" with great success: http://www.acehardware.com/product/index.jsp?productId=19708276&KPID=15308449&pla=pla_15308449

... but found that it would NOT bond the black rubber sheeting back onto an extruded aluminum running board on my mother's Sienna, so I tried THIS stuff:
3M 08609
http://multimedia.3m.com/mws/media/107695O/3mtm-super-fast-urethane-08609.pdf

no idea on temperature resistance, but it worked where the Pliobond failed.
damn sticky stuff. took two weeks to finally get it off my hands. about $22 for a caulking-gun-size tube at an automotive body and fender supply house.
 

yhprum

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Joined
Jul 27, 2006
Messages
1,390
Location
Brisbane Australia
I had a rubber carb boot that separated from the aluminum mounting flange. Known issue on Yamaha XT600. Used the water activated gorilla glue after cleaning scuffing both surfaces before bonding together. I put a small blob on just the rubber to test it, and it wouldn't come off, it looked like it would tear the rubber first.
 
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