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Which RTV to use when changing LC chamber?

 
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incova



Joined: 27 Nov 2006
Posts: 789
Location: london

Posted: Sun Nov 29, 2015 3:35 am    Post subject: Which RTV to use when changing LC chamber?

Will this work,

https://www.polymax.co.uk/silicone/adhesives/rtv-106-red-silicone-adhesive

http://www.amazon.co.uk/V-tech-Black-Silicone-Instant-Gasket/dp/B00442NWOQ

If not any advice?


I am based in the UK.

Thanks.

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draganm



Joined: 08 Mar 2006
Posts: 8990
Location: Colorado

Posted: Sun Nov 29, 2015 6:05 pm    Post subject:

100% pure silicone is clear, black is ok too, either one is fine. The orange stuff and all colored versions have additives for automotive use, gasoline/oil resistance, fireplaces, etc.

If your doing tubes you don't want to buy little tubes in cardboard sleeves, get a 10 oz. tube and put it in a caulk gun, you will have enough to do all 3 tubes amd more and it will be much easier to control and apply in a precise manner. You want pure silicone GE #1 or other original silicone with the Acetic acid curing catalyst . Do not GE #2 , it will smell better but takes forever to cure

this is $5. here , but should be available at any hardware store there as well

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incova



Joined: 27 Nov 2006
Posts: 789
Location: london

Posted: Mon Nov 30, 2015 1:35 am    Post subject: Hey Dragan,

Got this one,

http://www.geocel.co.uk/catalogue/single-brand/dow-corning-7-series/dow-corning-781-acetoxy-silicone-sealant#

I think I will leave it for a week to cure, thanks so much for the input, I have cut out the old tube.

Appreciated.

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CasetheCorvetteman



Joined: 09 Nov 2008
Posts: 6326
Location: Australia

Posted: Tue Dec 01, 2015 10:29 am    Post subject:

I use Permatex ULTRA Grey. Itll never leak, and its good stuff.

DO NOT use it on HV leads though, or ULTRA Black. Theyre somewhat conductive.

Ive never ever seen GE stuff here in Australia, not even electrical wholesalers stock that brand, so i doubt youd see it on the shelves in the UK either, being that its an American brand, so is Permatex, but its also more widely used in the automotive industry, hence available as an OEM product.

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Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...

RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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incova



Joined: 27 Nov 2006
Posts: 789
Location: london

Posted: Tue Dec 01, 2015 3:57 pm    Post subject: HEy there,

I went with the Dow Corning 781 transparent, hopefully it should be ok.

Thanks for the suggestion though!

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draganm



Joined: 08 Mar 2006
Posts: 8990
Location: Colorado

Posted: Tue Dec 01, 2015 6:18 pm    Post subject: Re: HEy there,

incova wrote:
I went with the Dow Corning 781 transparent, hopefully it should be ok.
well since Dow Corning pioneered what we know today as Silicone paste , in 1944, I think you should be OK. Wink
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incova



Joined: 27 Nov 2006
Posts: 789
Location: london

Posted: Wed Dec 02, 2015 12:32 am    Post subject: Hey Dragan,

I didnt know that, thanks again for the advice I was going to give it a week to set what do you think?
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CasetheCorvetteman



Joined: 09 Nov 2008
Posts: 6326
Location: Australia

Posted: Wed Dec 02, 2015 9:46 am    Post subject:

Yep, at least a week.
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Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...

RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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draganm



Joined: 08 Mar 2006
Posts: 8990
Location: Colorado

Posted: Wed Dec 02, 2015 4:36 pm    Post subject: Re: Hey Dragan,

incova wrote:
I didnt know that, thanks again for the advice I was going to give it a week to set what do you think?
for the low emission stuff, i have waited a week before. For the good, stinky stuff, full cure is 24 hours at 70 degrees Farenheit and 50% humidity. Maybe 48 hours for a really thick layer.
If you live in cold, dry place like Colorado it will take longer as well.
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