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Best RTV

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Old May 4, 2006 | 01:29 AM
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Default Best RTV

I'm possibly going to re-seal my HVII to the UIM.
Here is a pic of the HVII on top of the LIM:
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The stock UIM gasket is between the HVII and LIM.
I currently have red RTV between the HVII and UIM.
So what would be the best RTV considering the temperature, plastic-plastic contact, and oil fumes from the PCV?
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Old May 4, 2006 | 01:42 AM
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The stuff in the black can with the touch nozzle. I think it'* called "The Right Stuff" or something along those lines.

EDIT:


from http://www.devcon.com/devconcatsolution.cfm?catid=66
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Old May 4, 2006 | 01:49 AM
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That dosen't really say how it works with plastics and it says 'low pressure seal'. Would this be ok for 20 or so inches of Hg in the UIM?
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Old May 4, 2006 | 01:51 AM
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How about the Ultra Series they mention?
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Old May 4, 2006 | 07:46 AM
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When I buy RTV there'* only one tube. Permatex Ultra Copper.

It works for all applications, Gas, Water, Oil, Air, Exhaust and has never let me down. Good adhesion properties. I applied a small amount to the Canadian car EGR pipe where it was leaking and haven't heard anything since.
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Old May 4, 2006 | 08:55 AM
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Originally Posted by BillBoost37
When I buy RTV there'* only one tube. Permatex Ultra Copper.

It works for all applications, Gas, Water, Oil, Air, Exhaust and has never let me down. Good adhesion properties. I applied a small amount to the Canadian car EGR pipe where it was leaking and haven't heard anything since.
Yeah, it seemed to fix the slightly rough idle. To be honest I don't even think about it anymore. I'll check again tomorrow.
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Old May 4, 2006 | 02:13 PM
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Ok thanks guys. I'll check out the Ultra Series then (copper).
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Old May 4, 2006 | 05:12 PM
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Even though I'm chiming in alittle late, I second the copper. I've used it and it'* held up great in high temps and I'm pretty sure the tube says it good to 600 degrees F.


Ed
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Old May 5, 2006 | 12:21 AM
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95naSTA I recognize that picture.

Whichever RTV you use be sure to extrude a test bead, and let it sit over night, to be sure it will cure all the way through. I don’t know if Permatex Ultra gets old or if they have bad batches but I have two tubes of the stuff that just sits there and never cures.
When you find a good tube of Permatex Ultra a ¼’ bead should cure all the way through in over night or sooner.
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Old May 5, 2006 | 10:52 AM
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I've had similar bad experiences with the ultra copper; either it didn't cure completely, or it cured but didn't bond well enough to prevent leaks.
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