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Dielectric Grease for Electrical Connectors, 2 oz.

Dielectric Grease for Electrical Connectors, 2 oz.

Item # 11755
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Accessories and Parts 11755 - Dielectric Grease - LubriMatic
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Protect your electrical connections with this specialized formula that combats corrosion from water damage. Electrical Contact Grease comes in a 2 oz. tube. 1-800-940-8924 to order LubriMatic accessories and parts part number 11755 or order online at Free expert support on all LubriMatic products. Guaranteed Lowest Price and Fastest Shipping for Dielectric Grease for Electrical Connectors, 2 oz.. Accessories and Parts reviews from real customers.
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LubriMatic Accessories and Parts - 11755

  • Trailer Wiring
  • Wiring
  • Dielectric Grease
  • LubriMatic

Protect your electrical connections with this specialized formula that combats corrosion from water damage. Electrical Contact Grease comes in a 2 oz. tube.

  • Helps prevent electrical failures caused by corrosion and moisture
  • Water resistant formulation sheds moisture and will not wash away
  • Protects bulbs, sockets, t-connector plugs and trailer connectors
  • 2 oz. Bottle
  • Dropping Point: >550 degrees F

Using electrical contact grease increases reliability and the life of the connection by preventing corrosion and sealing the connection.

11755 Lubrimatic Electrical Contact Grease

Video of Dielectric Grease for Electrical Connectors, 2 oz.

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for LubriMatic Electrical Connector Dielectric Grease Review

Hi there, maintenance-oriented haulers today. Today we're going to be taking a look at Librimatic's Dielectric Contact Grease. So we've been experiencing some issues with our travel trailer here. When we plug in, sometimes our lights are working, sometimes they're not. It's a little bit finicky. If we jiggle the connector, it usually works.Most of the time, this is caused by poor contacts inside your connector and that's usually due to corrosion.

You can see here that this connector is actually got some corrosion on it. And the plastic's actually starting to deform because once you get this corrosion on here, it's possible that you can still have contact enough to eliminate your lights and operate your functions. But this corrosion is going to cause extra resistance here, which is going to cause it to build heat. And as it builds up heat, you can see the plastic's deformed due to the excessive heat that it's caused. And eventually over time, that heat is going to cause further damage and fretting onto our connectors here.

And eventually, it's going to get so bad that we're not even going to be able to fix it.So to get on top of this, before it gets that bad, we want to clean out all this corrosion and we want to seal it up to prevent it from happening again. And that's why we're going to be using the Dielectric Grease here. Now there's a lot of different ways you can clean out corrosion. Usually something acidic like vinegar and water mixture works great. Or you can just go to your automotive store and pick up electrical contact cleaner to clean it out.

You can also use a bristle brush to clean it out. But you do want to be careful when using any brushes down here because if you spread those contacts apart, you may spread them apart too far to where they're not going to touch onto the terminals once you plug it in and then you need to replace the pins, potentially the whole connector.So we're just going to spray our contact cleaner in here. And we're using this contact cleaner because it is a quick-dry contact solution. Because we don't want any moisture or anything left behind. This is designed to dry out very rapidly so we don't leave any moisture behind.So we use the contact cleaner.

We still got a little bit of corrosion in there. So we're going to take our bristle brush to clean that up. Now you'll notice I'm not sticking it down in there, we don't want to spread those terminals out. So we're just kind of rubbing it along the top to get that corrosion out of there. A toothbrush works very well as well, if you've got an old one laying around. But if you don't and you need a bristled rush, you can get one just like I got here at And we're just trying to get all that out of there.Now that all of our contacts have been cleaned up, we're going to take the Dielectric Grease and we're going to apply it generously to all of our pins here. So we want to try to keep out any moisture from getting in there. And we're not just using any grease. We are using dielectric grease because dielectric grease is specifically designed for this application as it does not conduct electricity so we don't have to worry about any of our contacts shorting out between one another. And then it has the other properties that grease has where it coats up the surface and helps keep out moisture, sealing it all in. So now that we've got that done, we're ready to plug it in to our trailer and hit the road. And we don't need to clean any of this up, we can just leave it there. We're trying to seal out moisture and dirt.On the other side here on our truck, it's a good idea to clean these pins out as well. So we don't want to transfer any of the corrosion that may be on these or the other ones, back and forth. And we can also put the dielectric on these pins as well, to help further seal up and protect this side.Now that we've cleaned up each end and got them greased, we can go ahead and plug them together. Now we discussed earlier about how the grease is non-conductive because that's what we want. We don't want any of our pins to be shorting out with the other ones next to it. But that doesn't mean that it's going to cause any issues with the connections between our connector here on our trailer and the one on our truck, because the pins are designed to be a nice tight fit. So when it goes in, we do get metal to metal contact as it pushes that grease out of the way. Now it's when during cleaning, if you do stick something down in there, you can spread those terminals apart. And when you go together, they may not touch that because you have damaged pins. Now to replace the pins as long as everything's okay, our grease is not going to affect us because that terminal is going to have good contact.And it's not only great for the seven poles like we showed you earlier, but it's going to work on all of your trailer connectors, especially ones that are exposed to the elements like this. Keeping them coated is going to help keep corrosion off of them to ensure a longer lasting connection. So your four poles, your five poles, basically anything here on the outside. And it's also highly recommended for you flat towers out there. So your six pole ends and your seven pole where it plugs into your motor home. Keep those all greased up as well, because we don't want any connection issues with our vehicle when we're flat towing it down the road.And while you're at it, don't forget about the lights on your trailer. All these connection points as well are susceptible to corrosion so we can keep all of those clean. And if you have incandescent bulbs on your vehicle, it's recommended to put them on those as well.Pretty much any connector that does not have a weather pack seal, which has a rubberized seal around it. You would want to put this grease on because they have no form of weather protection. And that's what this is doing for us, is providing us with a coat of weather protection.All in all, this is going to be an inexpensive way to keep all of your electrical components operating properly and avoiding expensive wiring repairs down the road. And that completes our look at Lubrimatic's Dielectric Contact Grease.

Customer Reviews

Dielectric Grease for Electrical Connectors, 2 oz. - 11755

Average Customer Rating:  4.8 out of 5 stars   (1008 Customer Reviews)

Protect your electrical connections with this specialized formula that combats corrosion from water damage. Electrical Contact Grease comes in a 2 oz. tube.


Ordered hitch receiver with wiring for bike rack installation on 2019 Ford Explorer. Everything arrived in less than a week. Crawled under the car with my burly son and finished the installation in about an hour. Toughest part was getting the exhaust hangers off. Didn't have a tool for that. Online installation video was a big help. Hitch frame rubs against right side exhaust hanger, hence the four star rating instead of five. Exhaust still appears to be level and no weird noises, so not an issue. Get the little plug in light tester. It's worth it, then keep it in the glove box. Haven't purchased bike rack yet, but no concerns about the hitch.


For the installation the instructions were good, but watching some videos made it much easier to take apart a brand new car. All went well. Installed on a 2020 Chevy Equinox 2.0


Used GE dielectrics grease before. This seems to be not as thick.
Make big hole so it comes out better. Seems to work. I use it for outdoor electrical connections. Especially batteries in lights and grill igniter.

Thomas - 04/17/2022


Used on my fifth wheel plug I installed and have had no problems with the connection. Also worked great on a connector I was having intermittent issues with. I would highly recommend this product.

Still working great after one year of use !
Mark - 03/28/2022


I have a 2003 F-150 and wiring parts I needed were a perfect fit. The videos were very helpful and informative. Now i know that there are relays and fuses that control trailer lights even through the truck lights are working fine.


I use this for more than my trailer lights wire harness to my car. Great stuff. Electrical connections stay connected!


The price I got was excellent compared to what the dealer would charge. Thanks to the etrailer installation videos, i was able to do it without difficulty and this is the first time i installed an item like this.


Works just as expected. etrailer is my go to for all things trailering.

Great Grease, great shipping and customer service!
Joshua - 05/16/2022


If you're tired of poor trailer electrical connections you need to get some of this grease!


About a year ago, I purchased a brake controller and parts to install a 7-pin trailer connector on my Ford Edge. The installation all went well and I used the Dielectric Grease to seal the wire connections at the connector. My four-star rating was given simply because I don't know if the grease is working as I hope it is. Time will tell more years down the road.
As a side note, I made an additional bracket to enclose both connectors (4-pin & 7-Ping, see photo) to keep the 4-Pin connector from sliding out of place because it was only retained on three sides without my bracket.


fantastic product all lamps started working with no failures.silicone made all connection problems go away.


This stuff really works to keep my tow vehicle and toad electrically connected. I used to spend a lot of time cleaning and redoing those troublesome electrical connections especially in wet weather. That is all behind me now. (Pun intended). The tube is strong to reside safely and conveniently in my tool box so it is readily available for future use.


This is a great product for keeping electrical connections dry and prevent rusting.
Easy to apply and last a long time.

I have not had to apply more as it is still working great.
Michael - 03/02/2022


This size tube is just right since I have multiple trailer connections to apply this to. Use of this Dielectric Grease is a must for good connections that last a long time.


Haven't had issues with connection or corrosion, 1 year post install. Probably a bit large of a container for 1 simple connection. Might be worth selling a single use option. Less waste?


Product is exactly what I needed to get my 5th wheel to connect to my pickup truck.


Keeps trailer connections clean and working properly.


I like the idea of keeping connectors protected from the elements.


Excellent product to prevent battery and plug wire oxidation. Treats any 12 volt connection to prevent bad connections later.


etrailer video showed how using dielectric contact grease wold be most helpful to make the under bed electric connections as water resistant as possible. I would never have know about it unless I watched the video. Great advice.

I am planning to refresh the grease every year.

The makes your life easier. No hassle connections and easy to disconnect.
Wayne B - 02/03/2021


We just purchased a 2019 Hyundai Santa Fe as our retirement vehicle for traveling. We wanted to install cargo accessories but the dealer prices were WAY to high. After researching for several days we found The prices were the best we found and the service was outstanding! We installed a Thule roof rack system that fits flawlessly and allows the panorama sun roof to plenty of roof to operate. The videos made in really easy to install. We also installed a trailer hitch system. The Tekonsha Trailer Wiring kit was also a piece of cake to install. If you're hesitant to work on electrical systems, there's no need to be afraid. It's actually easier than it looks in the video.
The Curt Trailer Hitch gave me major headaches. The delivery company banged the box up pretty badly. Apparently it tweaked the hitch just enough so that the holes were misaligned. No problem, after talking me through the installation one more time to be sure it was damaged, they shipped a new unit. The second hitch went in fine. It took a while, and it's not as easy as it looks in the video, but I'm 67 years old I did the installation myself...
Overall, I gave five stars because the price match guaranty makes it a wise choice price wise. he videos are a big help during installation. But the real difference is the service. A lot of folks provide good service to make a sale, but etrailer goes the extra distance to provide great service afterwards. That's unique! Thanks etrailer!


Dielectric grease


Keeps connections clean works well


Install went exactly as described in the installation video, I did the work myself with a set of ramps to elevate half the van at a time.


Affordable protection for circuits that are exposed to weather and grime. Handy "palm size" tube makes application easy and less wasted product. Glad to have found this electrical grease easily available, so I can use it generously anywhere on vehicle(s) that need corrosion lubrication.

Show More Reviews

Ask the Experts about this LubriMatic Accessories and Parts

  • Does Dialectic Grease Conduct Electricity
    Dialectic grease does NOT conduct electricity. It is used on connections to help insulate the metal to metal connection and prevent corrosion by preventing moisture from getting to the connection.
    view full answer...
  • Troubleshooting Pulsing Brakes when Blinkers are On
    The right turn blinker circuit of your trailer is shorting out to the brake output circuit (signal that carries the brake controller voltage) and that is why you are experiencing the pulsating. Starting at the trailer connector on the trailer you will need to trace the wiring back from there to the brake assemblies looking for any cut or exposed wire and fix as necessary. I attached a help article on brake controllers for you to check out as well.
    view full answer...
  • Troubleshooting Weak Ground on 2004 Silverado and Trailer Wiring
    No worries. What you describe sounds like the classic case of a bad ground. Because vehicle headlights use a fair bit of power and remain on continuously (rather than blink) they often are the lighting function that causes a weak ground connection to reveal itself. Find the main ground wire from the truck's trailer connector and find where it attaches to the truck metalwork. You may need only sand off this grounding point so that you can re-attach the ground wire to clean bare metal. Often...
    view full answer...
  • Troubleshooting 2003 Chevy 2500 Trailer Light Issues
    For your 2003 Chevy Silverado 2500 HD, if you are experiencing the constant hot on both the trailer and the vehicle, then it is a bad relay. If you are experiencing just the trailer staying hot, then it could be a bad relay or it could be a connection or ground issue as well. It sounds like you have tested your connections independently, but you may want to use a little sandpaper to clean your connection between your truck and trailer and use some dielectric grease like # 11755 to keep...
    view full answer...
  • Troubleshooting Trailer Turn Signals That Do Not Operate When Headlights Are Turned On
    The problem you describe sounds like a classic case of a bad ground connection on either your vehicle's trailer wiring harness or the one on the trailer. When you turn on your vehicle headlights you also activate the trailer's running lights. Since these lights remain on continuously they draw more current through the trailer wiring. If the ground wire connections are loose or corroded the wiring will not be able to pass all of the required 12-volt power the lights need and this can cause...
    view full answer...
  • Trailer Disconnected Error Message
    The most common cause for a trailer brake controller to display the 'no trailer connected' error message is a damaged or corroded connector on the trailer. Corrosion can occur inside a connector too so you'll want to re-inspect both the external contacts and the back/inside of the connectors if possible for signs of any corrosion. Even slight greenish or whitish discoloration can indicate a corrosion issue, and certainly it can also happen that there can be severe corrosive build-up inside...
    view full answer...
  • Troubleshooting Utility Trailer Lighting Signals After Winter Storage
    The first thing to check on your trailer is the main ground wire. After winter storage it is possible the trailer's main grounding point has corroded. A weak ground can cause all sorts of weird behavior from trailer lights. Remove the ground ring terminal and sand the grounding point to remove all rust, grease, dirt, paint and primer to expose clean bare metal. Re-attach the ground wire ring terminal and apply dielectric grease # 11755 to block water and dirt. Since the vehicle is new...
    view full answer...
  • Troubleshooting Wiring Connection When Vehicle and Trailer Both Work But Not Together
    It sounds like a common ground wire issue. Since everything on the vehicle checks out and everything on the trailer checks out and both work independently, the issue is with a ground wire most likely on the trailer. The reason why the trailer works with another vehicle without issue is simply because that vehicle is able to supply more power to help mitigate a ground connection that can be improved. My recommendation is to start with the trailer ground connection and make sure it is...
    view full answer...
  • Troubleshooting Brake Controller Malfunction When Trailer Plug Gets Wet
    In order to protect your circuit breaker and your controller, you do need to keep moisture out of the electrical connections causing shorts. My recommendation is to use dielectric grease # 11755 to keep moisture and debris out of your connections. Use this at any connection point to give you a more secured connection. If you don't already have a cover for your trailer connection on your trailer, I recommend replacing your connector with one that has a spring loaded cover to keep a tight...
    view full answer...
  • Running Lights Turn Off When Brake Pedal is Applied
    It sounds like you have a short somewhere. This is the result of a bad ground or some damaged wiring. Check your grounds and make sure they are secure and connected to clean, bare-metal surfaces and that your wiring isn't damaged or pinched. You can also check the connector on your tow vehicle and trailer to see if there is any corrosion. If you do find corrosion in either connector clean it out and apply some dielectric grease # 11755. Let me know if this doesn't fix your problem and...
    view full answer...
  • Troubleshooting Brake Light Bulb that Works Again After Being Removed and Reinstalled
    I am not sure if you are referring to the brake light on your 2011 BMW X3 or one on the trailer you might be towing but in either case since the problem goes away after you remove and re-insert the bulb it sounds like there may be either a loose wiring connection or potentially a corrosion issue within the bulb socket. Sometimes just handling the wiring/socket/bulb on a troublesome light will move it enough to reestablish the power input when the wire is loose. By the same token, removing...
    view full answer...
  • Can Dielectric Grease Be Used On A/C Electrical Cord Connections
    The first thing I recommend is to clean the prongs on the plugs you mentioned are corroded. You can use light grit sandpapaer to get them clean and then use the dielectric grease, part # 11755. This will help prevent future corrosion and also helps keep dirt out of the connections.
    view full answer...
  • Troubleshooting Brake Light That Comes on with Varying Brightness
    When a trailer light exhibits varying brightness this is usually caused by a grounding issue. If a trailer's main ground is marginal (say for example if it is attached to a rusty spot on the frame) it may pass enough current for some light functions to work properly but not others. Similarly, if the light in question uses its mounting hardware as the ground, rust, grease, primer and paint at that mounting point could cause the same grounding problem. Cleaning the grounding point and re-installing...
    view full answer...
  • Can Butt Connectors Be Used in Place of Quick-Splice Connectors for Installing LED Trailer Lights
    Yes, since all the running/clearance lights on your trailer will be fed by the same circuit you can use butt connectors rather than quick-splice connectors to enable a longer-lasting and more water-resistant connection. Wiring the lights as you described is fine. I also suggest using dielectric grease # 11755 in/on all connectors to prevent entry of water and contaminants that could eventually cause connectivity issues.
    view full answer...
  • Troubleshooting Bestop Power Board Installation
    If new batteries do not correct the issue with your Bestop Power Boards retracting only partially then I suggest you check the wiring on the system. An issue as simple as a slightly loose ground wire could be the cause. Road gremlins like salt can also cause corrosion of electrical contacts and these may require cleaning and re-installation. Even the battery contacts inside the sensor may need cleaning. Any electrical connections can be protected after cleaning by using an application...
    view full answer...
  • Why Is Grease Used in Connection For Installing Trailer Wiring in 2013 Chevy Traverse
    When making all wiring connections it doesn't hurt to use dielectric grease like part # 11755. This helps prevent corrosion and keep out water and debris. It's not an absolute requirement but it can only help.
    view full answer...
  • Is Grease Required When Installing Spark Plugs on Vehicle
    Sounds like you are asking if you should install dielectric grease in any situations when swapping spark plugs. The answer is yes. Basically you want to put it in both sides of the spark plug wires. Where it connects to the coil and where it connects to the spark plug. Do NOT put any on the spark plug electrode though. For grease we have # 11755.
    view full answer...
  • Troubleshooting Trailer Light That Only Works When Handled
    We can help. It sounds like there is a grounding problem with the one light on your trailer. Since the light comes on when you handle it, this suggests that the light's grounding wire (or grounding post, if it uses the post to establish the electrical ground) is not making complete and constant contact with the trailer frame. Grounds must be made to clean bare metal, a surface free of paint, primer, grease, rust, etc. You can try sanding the mounting point for the light (or for the ground...
    view full answer...
  • How to Prevent Water from Entering 6-Pole Vehicle Socket When Not in Use
    I understand the circumstances and the need you describe but unfortunately we do not have an add-on protective cover for a 6-pole. You might try a healthy application of dielectric grease # 11755 to prevent shorts from moisture entering the socket. This would require periodic re-application but it would work to keep water out of the socket.
    view full answer...
  • Are Magnet Wires on Dexter Electric Drum Brake Polarized as Positive & Negative
    No, on an electric drum brake assembly the magnet wires are NOT polarized so either wire can be attached to the frame as ground or used for the +12V brake circuit. Do your best to make sure the ground wire is attached to a rust-free, grease-free bare metal surface. An application of dielectric grease like # 11755 over that secure ground connection can help prevent the entry of moisture that can lead to corrosion.
    view full answer...
  • Troubleshooting Lippert Electric Motorcoach Steps on 2012 Tiffin Allegro
    Since your electric motorcoach steps seem to be mechanically okay (the linkage and motor appear to function properly) I would suspect either a problem with the 12V power wiring to the steps or with the connectors that link the various parts. After 5 years in use these connections could loosen up and/or develop some corrosion. The faint click could be due to a weak power connection that is not able to deliver quite enough power to the motor to activate the steps. Check your main power connections,...
    view full answer...
  • Trailer Brakes Lockup While in Reverse With Different Trailers
    It sounds to me like the reverse light and brake output signal wires are touching one another. The two wires are likely shorting one another at the rear of the vehicle on the trailer connector or in the wiring harness. The first thing you will want to do is use a bit of electrical cleaner on the metal pins inside the connector followed by a thin line of dielectric grease like part # 11755. Once the connector has been cleaned you will want to move to the rear of the connector and give...
    view full answer...
  • Can Grounding Issues Affect Lighting and Trailer Brake Functions on 2001 GMC Sierra 2500 HD
    Your recently installed audio amplifier should have no interaction with the vehicle or trailer lighting since it should be directly connected only to the battery +12V and ground. There should be no common wiring between the audio and lighting systems. Your trailer lights being incandescent should have no bearings on this issue. What is the error message on your trailer brake controller? If it indicates that it has lost connection to the trailer brake circuit then there could be a corrosion...
    view full answer...
  • Troubleshooting Blown Fuses on Running Light Circuit of 7-Way Socket
    The easiest way to troubleshoot your trailer lighting functions is when it is not connected to the tow vehicle. Apply 12V power from the truck's battery or a well-charged spare if you have in the garage directly to the contacts on the trailer plug. Direct power input to the trailer plug lets you test the trailer running/clearance/license plate light function in isolation, without any possible interaction with the vehicle. A set of jumper cables and two short lengths of 10- or 12-gauge wire...
    view full answer...
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