contact lubricant

[Al Kossow]

dwight elvey wrote:

>>> This is abslutely not true. I use DC#4 and it works great. I is often used
>>>
>>> in high voltage applications and an insulator so I doubt it is conductive
>>>
>>> in any way.
>>>
>>> I posted about experiments I've done while at Intel, years ago.
>>>
>>> It improved gold on gold contacts from 10-15 milliohms to less than
>>>
>>> 2 milliohms. This all while being non-conductive.
>>>
>>> Dwight
>>>
>>>
>> We use DC#4 on our classic computerized (to stay on topic) pinball games, and we find too that contact resistance appears to drop after application. We are dealing with medium current (6 - 15A) through regular Molex pins and the connectors are noticably cooler after a dab of DC#4 is added.
>>
>> We apply it to connectors and plugs and the results are longer life and reduced insertion/extraction resistance as well.
>>
>> I have searched for documents from Dow Corning to support this as I do recall seeing something to that effect when I first found out about this great compound about ten years ago. No luck so far!
>>
>> John :-#)#
>>
> 

here's what's in it from the material safety data sheet on Dow's site:

http://www.dowcorning.com/applications/search/products/details.aspx?prod=01903128&type=prod

CAS Number   Wt %       Component Name
68037-74-1   > 60.0     Dimethyl, methyl silicone resin
7631-86-9    7.0 - 13.0 Silica, amorphous
70131-67-8   5.0 - 10.0 Dimethyl siloxane, hydroxy-terminated

Description

Silicone-based compound, moderate consistency.
Lubricant suitable for electrical connectors and joints.

And it listed as having high electrical resistance.