What's so special about Silicone dielectric grease? - Page 2 - SailNet Community
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post #11 of 14 Old 03-31-2012
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Re: What's so special about Silicone dielectric grease?

pdq-
Thanks for the clarification! No-Ox sounds like the better way to go, but at this point I'm still a silicone grease fan. Doesn't just last a long time, lasts 'forever'.

Med-
"you'll have some of that insulating grease between the post and cable akin to a thin film of insulating plastic between the connections. Wouldn't that be a bad thing?" Yes, that would be a bad thing. Except, when you snug down the connection the grease is displaced and there is a metal-to-metal contact which carries the connection. You only have grease between the surfaces where the metals aren't really in contact, or if you haven't tightened them down.
If there's no concern about current leakage from one wire to the next, by all means use anitseize or some other metal-doped goop instead. Personally, I think either will work well at preventing corrosion, but I like the idea that the silicone grease simply can't create any trace current leaks, or shorts of any kind. From telephone jacks to battery cables, it has worked well for me. No complaints at all.
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post #12 of 14 Old 03-31-2012 Thread Starter
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Re: What's so special about Silicone dielectric grease?

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Originally Posted by hellosailor View Post
pdq-
Thanks for the clarification! No-Ox sounds like the better way to go, but at this point I'm still a silicone grease fan. Doesn't just last a long time, lasts 'forever'.

Med-
"you'll have some of that insulating grease between the post and cable akin to a thin film of insulating plastic between the connections. Wouldn't that be a bad thing?" Yes, that would be a bad thing. Except, when you snug down the connection the grease is displaced and there is a metal-to-metal contact which carries the connection. You only have grease between the surfaces where the metals aren't really in contact, or if you haven't tightened them down.
If there's no concern about current leakage from one wire to the next, by all means use anitseize or some other metal-doped goop instead. Personally, I think either will work well at preventing corrosion, but I like the idea that the silicone grease simply can't create any trace current leaks, or shorts of any kind. From telephone jacks to battery cables, it has worked well for me. No complaints at all.
That makes sense. I figured it was the right stuff to use, it just bugs me when it doesn't make sense to me. Thanks for the clarification.

BTW does anyone have a good source for cheap silicone dielectric grease or the NO-OX that was mentioned? I don't like paying what Ancor marine charges.

Maine do you sell the good stuff?

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post #13 of 14 Old 03-31-2012
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Re: What's so special about Silicone dielectric grease?

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That makes sense. I figured it was the right stuff to use, it just bugs me when it doesn't make sense to me. Thanks for the clarification.

BTW does anyone have a good source for cheap silicone dielectric grease or the NO-OX that was mentioned? I don't like paying what Ancor marine charges.

Maine do you sell the good stuff?

MedSailor
MS gave a good source for the No-Oxid above. My only source was industrial and wouldn't help.

As for silicon grease, the Superlube is not a bad low cost choice. It is always $$$. And it is good stuff. It does pay to work neatly, though. Also note that if you get it on the wire the adhesive shrink doesn't work so well.

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post #14 of 14 Old 04-02-2012
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Re: What's so special about Silicone dielectric grease?

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Would this work for keeping electrical contacts rust free?
Short answer to your question: yes. SuperLube actually works quite well as a dielectric grease.
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