| [GMCnet] Re: Grease Vs Silicon Grease Vs Dielectric Grease [message #368568 is a reply to message #368566] |
Tue, 25 January 2022 15:07   |
k2gkk
Messages: 4452
Registered: November 2009
Karma:
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Senior Member |
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I use Penetrox and NoAlox interchagably to coat
mating surfaces of aluminum elements of directional
amateur radio antennas. It is definitely conductive
and when applied to clean surfaces, allows those
antennas to be taken apart and put back together
easily in a new location. I believe both of these use
powdered aluminum as the electrical carrier.
DX Engineering Co. also has a similar product that
is copper bearing for use in connecting grounding
rods of copper or copper coated steel. I am certain
that electrical supply houses also carry this product.
D C "Mac" Macdonald
Amateur Radio K2GKK
Since 30 November '53
USAF and FAA, Retired
Member GMCMI & Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com
________________________________
From: Matt Colie
Sent: Tuesday, January 25, 2022 14:35
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Re: Grease Vs Silicon Grease Vs Dielectric Grease
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 to 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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