| Re: [GMCnet] Re: Grease Vs Silicon Grease Vs Dielectric Grease [message #368566 is a reply to message #368564] |
Tue, 25 January 2022 14:35   |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma:
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Senior Member |
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stu@97381.com, Emery wrote on Tue, 25 January 2022 13:28Thanks, Matt.
Dick Paterson has told me that he uses an electrically conductive grease called OxGard. He asks I said that the module heat sink grease can run down into the two screws and act to insulate it electrically. The module depends on the grounding through those two screws to operate properly. So, he puts OxGard on the screws when he mounts the module.
Emery Stora
Emery,
Dick is no fool, and come-backs don't help your reputation.
I was unsure as to whether I should try to bring in those connection enhancement sorts. I'm not sure that they qualify as a grease. They are greasy enough.
Oxgard, NOALOX and PENETROX (the only three I have used) all seem be pretty much the same stuff. They start out as lithium based grease but all mention that they use a reduced sulfur stock and then stir in mostly zinc powder. They may have other stuff too, but the plan in that when the join is compressed, the grease and other stuff gets out of the zinc gets left in the connection areas of the joint. The grease prevents exposure and the zine makes the actual connection over more area than would normally be in a dry joint.
Originally, I thought that these were a silicon grease base, but MSDS and consults with a manufacture said otherwise. I guess if you were desperate, you could use it in place of a lithium grease at only about eleven times the cost.
When we played with this, we could get a reading over a short span with a 1kV megger, but no normal meter would report conductivity until the probes actually touched.
I did think about using it in a connector when my silicon grease was not in my kit, but as the connector body was plastic and I did not know how that material would deal with the lithium grease, I got off the ladder and went to get the Dow silicon grease. I don't need come-back either.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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