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  Silicon Sealant 
 
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Shadow_Ops_Airman1 Aug 07, 2007, 03:15am EDT Reply - Quote - Report Abuse
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Anyone know where i can get Silicon Sealant for Electronics, as im trying to cover up some Electrical Leads so i dont dope them in AS5 Epoxy accidently while trying to attach heatsinks to chips on my mobo.


AMD Athlon XP-M 2500+ (133x14= 1867MHz) (209x11= 2299MHz)
DFI LP NF2 Ultra-B (Hellfire 3EG Rev2)
Antec SX800, Neo HE 500, 4 Antec 8CM Fans
Thermalright SI-97 1 Antec Tricool 12CM Fan
CL SB XFi Xtreme Music
2x Barracuda HDs (250/400)
2x Samsung Write
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Dublin_Gunner Aug 07, 2007, 08:40am EDT Reply - Quote - Report Abuse
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>> Re: Silicon Sealant
How would you manage to get AS5 everywhere?

What are you putting heatsinks on? if its the likes of mosfets on the board you should be using a thermal adhesive, not AS5

Lancool PC K62
Phenom II x3 @ 3.5Ghz
4GB DDR2-800
ASUS GTX570 DirectCU II
Dr. Peaceful Aug 08, 2007, 09:42am EDT Reply - Quote - Report Abuse
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Edited: Aug 08, 2007, 09:43am EDT

 
>> Re: Silicon Sealant
Manufacturers use hot glue, http://en.wikipedia.org/wiki/Hot_glue , for electronic circuit boards. I saw it in PSU and mobos.

edit, stupid comma ruin the link. ;)

Shadow_Ops_Airman1 Aug 09, 2007, 12:47am EDT Reply - Quote - Report Abuse
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>> Re: Silicon Sealant
Gunner, AS5 Thermal Epoxy, is a thermal adhesive, it still can cause shorts, Also to make the Epoxy less Permanent you mix in some AS5 Compound, Thats what i did with the ram on the laptop vid card. Also Hot Glue is not recommended because you cant remove it once applied. I want something that will stay in a rubbery state.

AMD Athlon XP-M 2500+ (133x14= 1867MHz) (209x11= 2299MHz)
DFI LP NF2 Ultra-B (Hellfire 3EG Rev2)
Antec SX800, Neo HE 500, 4 Antec 8CM Fans
Thermalright SI-97 1 Antec Tricool 12CM Fan
CL SB XFi Xtreme Music
2x Barracuda HDs (250/400)
2x Samsung Write
Laptop Willie Aug 09, 2007, 06:57pm EDT Reply - Quote - Report Abuse
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>> Re: Silicon Sealant
Silicon sealant can be found in most any hardware store in squeeze tubes. Most labels don't list electronics as a use, but as a retired Air Force Master Sgt. I can tell you, we used a lot of it to seal and as cable ties.
You do what you have to do.
Willie
laptopwillie.com

Laptop Willie
check out laptopwillie.com
john albrich Aug 10, 2007, 09:33pm EDT Reply - Quote - Report Abuse
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Edited: Aug 10, 2007, 09:38pm EDT

 
>> Re: Silicon Sealant
If you're worried about the acetic acid that is found while normal silicone sealants are curing (and I generally would be for some electronics applications) you might try using aquarium silicone sealant.

I've never had any trouble removing consumer-grade hot-melt glue. For safer application and easier removal, it also helps to use the warm-melt glue instead of the hot-melt. Remember that at temps we're used to, hot or warm-melt glue will re-flow to some degree in certain applications.


edit to add-by the way, there are silicone sealants with different viscosities. If you need something that will completely fill-in porous/holey areas, then use a low-viscosity sealant. The downside is that it can be a bit more messy. These should all be available at a hardware or hobby store or via the internet.

Shadow_Ops_Airman1 Aug 10, 2007, 09:54pm EDT Reply - Quote - Report Abuse
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>> Re: Silicon Sealant
Willie, ive yet to see the stuff used as cable ties, as we use wax string on the F-16.

anyways here is an example of what my board looks like, sans the wires, the watercooling, and the mosfet heatsinks, notice all the chips that are covered in heatsinks

http://img126.imageshack.us/my.php?image=imagem070du3.jpg

here is the board without that stuff, pay attention to the chips covered on above board
http://us.dfi.com.tw/Upload/Product_Picture/LP%20NFII%20ULTRA%20B%20b.jpg

AMD Athlon XP-M 2500+ (133x14= 1867MHz) (209x11= 2299MHz)
DFI LP NF2 Ultra-B (Hellfire 3EG Rev2)
Antec SX800, Neo HE 500, 4 Antec 8CM Fans
Thermalright SI-97 1 Antec Tricool 12CM Fan
CL SB XFi Xtreme Music
2x Barracuda HDs (250/400)
2x Samsung Write
Dr. Peaceful Aug 13, 2007, 03:58pm EDT Reply - Quote - Report Abuse
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>> Re: Silicon Sealant
Is that really necessary to put sinks in all chips, beside GPU, CPU, NB, and DIMMS chips? I can see you put smaller sinks in smaller chips. And even for tiny chips, I can't really tell, but what looks like some kind of silvery metal plate on top. Is that necessary? ;)

Aug 13, 2007, 06:27pm EDT Reply - Quote - Report Abuse
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>> Re: Silicon Sealant
After a solder job, I usually seal with hot glue.

Dublin_Gunner Aug 13, 2007, 08:14pm EDT Reply - Quote - Report Abuse
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>> Re: Silicon Sealant
Personally, I see nothing that requires further cooling froom your screenies m8.

Lancool PC K62
Phenom II x3 @ 3.5Ghz
4GB DDR2-800
ASUS GTX570 DirectCU II

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