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Proper method to apply dielectric grease... #4512599
09/10/17 07:04 PM
09/10/17 07:04 PM
Joined: Apr 2010
Posts: 93
West Virginia
prs Offline OP
prs  Offline OP
Joined: Apr 2010
Posts: 93
West Virginia
... to electrical connections. I know my technique, but I may be a self taught idiot. So, does one slather the grease onto the conductors and plastic, rubber connector surfaces? Or does one only apply the grease to the conductors? Or just to the surface of the male connecter?

My way is to only apply to the male connector's surface that goes into the female, thus sealing the joint. I do not get any on the conductor pins. But which is correct?

prs


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Re: Proper method to apply dielectric grease... [Re: prs] #4512601
09/10/17 07:06 PM
09/10/17 07:06 PM
Joined: Aug 2016
Posts: 59
Minnesota
leje0306 Offline
leje0306  Offline
Joined: Aug 2016
Posts: 59
Minnesota
This should be a good one. Dielectric grease stops the flow of electricity. Therefore, do not put it directly on the conductors.

Re: Proper method to apply dielectric grease... [Re: leje0306] #4512645
09/10/17 07:59 PM
09/10/17 07:59 PM
Joined: Jan 2009
Posts: 6,206
New England
gathermewool Offline
gathermewool  Offline
Joined: Jan 2009
Posts: 6,206
New England
Originally Posted By: leje0306
This should be a good one. Dielectric grease stops the flow of electricity. Therefore, do not put it directly on the conductors.


Huh? Most male and female connections make contact via friction. The connection will displace (scrape) away the grease; the grease will have zero effect on the connection. The benefit of dielectric grease, is that it will keep out moisture and prevent oxidation, allowing the contact to remain corrosion-free.

To the OP, it doesn't matter. I apply a small amount of dielectric grease to the female connector, so that the male will enter, the grease displaced, and a good seal formed.


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Re: Proper method to apply dielectric grease... [Re: prs] #4512659
09/10/17 08:21 PM
09/10/17 08:21 PM
Joined: Sep 2005
Posts: 5,684
MIchigan
Warstud Offline
Warstud  Offline
Joined: Sep 2005
Posts: 5,684
MIchigan

Re: Proper method to apply dielectric grease... [Re: prs] #4512660
09/10/17 08:22 PM
09/10/17 08:22 PM
Joined: Aug 2014
Posts: 520
WA
SnowDrifter Offline
SnowDrifter  Offline
Joined: Aug 2014
Posts: 520
WA
Squirt some in either side of the connector and push 'em together


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Re: Proper method to apply dielectric grease... [Re: leje0306] #4512661
09/10/17 08:23 PM
09/10/17 08:23 PM
Joined: Aug 2014
Posts: 520
WA
SnowDrifter Offline
SnowDrifter  Offline
Joined: Aug 2014
Posts: 520
WA
Originally Posted By: leje0306
This should be a good one. Dielectric grease stops the flow of electricity. Therefore, do not put it directly on the conductors.


no


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Re: Proper method to apply dielectric grease... [Re: prs] #4512700
09/10/17 09:19 PM
09/10/17 09:19 PM
Joined: May 2012
Posts: 1,400
Georgia
AVB Offline
AVB  Offline
Joined: May 2012
Posts: 1,400
Georgia
lol My old boss put dielectric grease on the battery cables of his Semi, then it wouldn't start. He is a smart guy, but didn't realize just what dielectric meant. I had to clean the cables and explain to him what he did.

Re: Proper method to apply dielectric grease... [Re: leje0306] #4512701
09/10/17 09:22 PM
09/10/17 09:22 PM
Joined: Oct 2012
Posts: 4,632
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,632
Taiwan
Originally Posted By: leje0306
This should be a good one. Dielectric grease stops the flow of electricity. Therefore, do not put it directly on the conductors.


Yay! At last a rationale for copper-based anti seize.

Re: Proper method to apply dielectric grease... [Re: gathermewool] #4512709
09/10/17 09:37 PM
09/10/17 09:37 PM
Joined: Aug 2011
Posts: 9,560
Boston, MA
HerrStig Offline
HerrStig  Offline
Joined: Aug 2011
Posts: 9,560
Boston, MA
Originally Posted By: gathermewool
Originally Posted By: leje0306
This should be a good one. Dielectric grease stops the flow of electricity. Therefore, do not put it directly on the conductors.


Huh? Most male and female connections make contact via friction. The connection will displace (scrape) away the grease; the grease will have zero effect on the connection. The benefit of dielectric grease, is that it will keep out moisture and prevent oxidation, allowing the contact to remain corrosion-free.

To the OP, it doesn't matter. I apply a small amount of dielectric grease to the female connector, so that the male will enter, the grease displaced, and a good seal formed.
This ^ Friction and clamping force will remove the grease from contact points leaving it to seal around them.

Last edited by HerrStig; 09/10/17 09:38 PM.
Re: Proper method to apply dielectric grease... [Re: prs] #4512756
09/10/17 10:33 PM
09/10/17 10:33 PM
Joined: Dec 2002
Posts: 42,088
New Jersey
JHZR2 Offline
JHZR2  Offline
Joined: Dec 2002
Posts: 42,088
New Jersey
Agree regarding friction and clamping force. This stuff has some number of volts/mil standoff of electricity. A connection has intimate contact, so effectively 0mil. So the conductivity is "infinite" (divide by zero), or in practice, no increase in resistance over surface asperities.

I watched the crc video. I suspect they just did what they do for effect... they put a LOT of grease in those connections, which would either glob out or cause the connector to pop back off.

Re: Proper method to apply dielectric grease... [Re: leje0306] #4512757
09/10/17 10:39 PM
09/10/17 10:39 PM
Joined: Jun 2015
Posts: 4,225
New England
Virtus_Probi Offline
Virtus_Probi  Offline
Joined: Jun 2015
Posts: 4,225
New England
Originally Posted By: leje0306
This should be a good one. Dielectric grease stops the flow of electricity. Therefore, do not put it directly on the conductors.


Air is also a good insulator, but connectors still work in it because the mating surfaces push it out.
Same with the grease.


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Re: Proper method to apply dielectric grease... [Re: prs] #4512777
09/10/17 11:27 PM
09/10/17 11:27 PM
Joined: Aug 2014
Posts: 520
WA
SnowDrifter Offline
SnowDrifter  Offline
Joined: Aug 2014
Posts: 520
WA
Since this thread is turning into false info about you shouldn't apply dielectric grease to electrical connectors, I'm going to nip this in the bud now.

Dielectric grease is designed specifically for electrical connections. It's purpose, to keep moisture and dirt out, It's a mechanical barrier. The reason it's used is if you were to use a conductive grease for electrical components, you would incur leakage current between electrical contacts, leading to electrolysis and corrosion. It keeps moisture out for the same reason. The stuff is designed specifically FOR electrical connections. Don't get hung up on the naming convention.

Last edited by SnowDrifter; 09/10/17 11:27 PM.

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Re: Proper method to apply dielectric grease... [Re: SnowDrifter] #4512833
09/11/17 01:48 AM
09/11/17 01:48 AM
Joined: Oct 2011
Posts: 1,379
CA
user52165 Offline
user52165  Offline
Joined: Oct 2011
Posts: 1,379
CA
Originally Posted By: SnowDrifter
Since this thread is turning into false info about you shouldn't apply dielectric grease to electrical connectors, I'm going to nip this in the bud now.

Dielectric grease is designed specifically for electrical connections. It's purpose, to keep moisture and dirt out, It's a mechanical barrier. The reason it's used is if you were to use a conductive grease for electrical components, you would incur leakage current between electrical contacts, leading to electrolysis and corrosion. It keeps moisture out for the same reason. The stuff is designed specifically FOR electrical connections. Don't get hung up on the naming convention.


Finally some sanity.

Re: Proper method to apply dielectric grease... [Re: prs] #4512842
09/11/17 03:10 AM
09/11/17 03:10 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA

Re: Proper method to apply dielectric grease... [Re: AVB] #4512896
09/11/17 06:34 AM
09/11/17 06:34 AM
Joined: Jun 2005
Posts: 5,245
North Texas
ARB1977 Offline
ARB1977  Offline
Joined: Jun 2005
Posts: 5,245
North Texas
Originally Posted By: AVB
lol My old boss put dielectric grease on the battery cables of his Semi, then it wouldn't start. He is a smart guy, but didn't realize just what dielectric meant. I had to clean the cables and explain to him what he did.

I've used dielectric grease on battery terminals for years and never had an issue.


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