5 Best Dielectric Grease Reviews (2024 Update): Full Guide

Table of Contents

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Last Updated on April 16, 2024 by John Patterson

Since dielectric grease was invented, it has become the most popular type of grease worldwide. And once you know the benefit it provides, you won’t want to buy any other grease. Now, finding a product that will serve the proper purpose shouldn’t be challenging.

However, you should check our best dielectric grease reviews if you want to buy the best one.

Once you are done with the article, you will find the product you are looking for that will remain in your workshop for years to come. No one can dislike the options we are about to present. They are the best ones available out there.

NameBrandWeightProduct DimensionsFolding
Permatex 22058Permatex1 ounces1.38 x 3.81 x 8 inchesNo
Mission Automotive Dielectric GreaseMission Automotive 8.8 ounces4.53 x 2.44 x 2.36 inchesNo
Permatex 81150Permatex0.704 ounces0.56 x 6.5 x 3.8 inchesNo
CRC GreaseCRC5.3 ounces8.75 x 2 x 2 inchesNo
Genuine Ford FluidFord3.2 ounces5.7 x 0.7 x 0.1 inchesNo

Best Dielectric Grease Reviews in 2024

Best Dielectric Grease Reviews

Here is the list of excellent products we want you to check out. Go through the reviews to know what they offer. Make sure you are buying the right products.

#1. Permatex 22058 Dielectric Tune-Up Grease, 3 oz. Tube

  • Brand: Permatex
  • Model: Dielectric grease
  • Size: 1.5 x 4 x 8 inches
  • Weight: 3.2 ounces

What We Liked
  • Incredible sealant at an affordable price
  • No voltage leakage
  • Provides maximum contact area
  • Perfect for repairing a damaged conductor

What We Didn't Like
  • Applicator gets greased at times

You won’t know what excellent grease is until you’ve checked out the product we are reviewing. And why this product shouldn’t be as amazing as it is when a well-renowned brand has produced it. Yes, when guys over there get their hands on making a new product, you can relax that it’s going to be something good.

Now, the formula is all about classy stuff. But, the fact that it makes an object highly resistant to corrosion is too brilliant. And if you are looking for a ridiculously perfect sealant, you are in the right place. So, there won’t be any problem lubricating your plastic boots anymore.

We were amazed at the product’s efficiency in dealing with all sorts of hardware. Also, it can lubricate motorbikes quite well. So, if versatility is what you are looking for, then once again, you are looking at the right product.

The most astonishing thing about this formula is that it’s cheap. Yes, you would expect such a brand-name product to be a bit expensive. But, our guy over here will make you happy with the price tag it comes along with.

There won’t be any product better than this one, let us assure you. So, if you buy it, you are likely to have a blast applying it to those objects that are badly in need of a lubricator.

#2. MISSION AUTOMOTIVE Dielectric Grease/Silicone Paste/Waterproof Marine Grease (8 Oz.)

  • Brand: Mission Automotive
  • Model: Dielectric grease
  • Size: 5 x 2.5 x 2 inches
  • Weight:  9 ounces

What We Liked
  • It’s a silicone-based grease
  • Perfect for professional uses
  • Water-resistant and corrosion-resistant
  • An applicator brush is introduced for easy maneuverability
  • Can handle extreme temperature

What We Didn't Like
  • The brush gets messy easily

The product we are about to review isn’t that bad itself when compared to the topmost one on our list. It might give the previous formula a good rivalry on a given day.

We found the product to be incredibly resistant to dirt and water. So, it’s needless to say how amazingly corrosion-resistant it is. Now, the best thing about it is the ability it shows to remain in its natural form when extreme heat is applied. And we aren’t talking about any 100 degrees over here.

500 degrees F is what this formula can withstand, or even more! We know; it’s ridiculous. So, if you are having difficulties with your car’s battery, then this is the product you want to choose to give it the lubrication it needs. Moreover, the fact that it’s incredibly versatile should convince any buyer.

Moreover, it will be a good option for dealing with marine equipment. Also, it will serve the purpose of awesomely with plastic and rubber. And as a great product, as this is expected to do, it prevents voltage dropping. For, there won’t be any unwanted build-up of any sort on the contact area.

So, tell us, who wouldn’t love such a formula? It has all the features you want. From the impressive level of resistance against different materials to versatility, this product is full of wonders. We would highly recommend it to anyone who’s looking to save some money.

#3. Permatex 81150 Dielectric Grease. .33 oz.

  • Brand: Permatex
  • Model: 81150
  • Size: 0.5 x 6.5 x 4 inches
  • Weight: 0.6 ounces

What We Liked
  • One of the best options for rubber-made stuff
  • Incredible resistance to water
  • It fights off the corrosion on battery terminals superbly
  • A perfect formula for protecting light bulbs

What We Didn't Like
  • Comes in small quantity

The brand has produced quite a few fantastic products. That’s why you are seeing us reviewing another model from it. Now, what’s lovely about this product is that it keeps the dirt away like nothing else.

Whenever you feel like those electrical connections will be affected by dirt, this is the formula you want by your side. And it will also be a nightmare for corrosion and salt. So, you can imagine how efficiently it will keep the connections protected.

Another thing we liked about it is that it can play the role of bulb grease. Yes, it will do the job so fine that you will think you are dealing with bulb grease when it’s dielectric grease in reality. So, if versatility is your preference, you might want to buy this product without looking further.

Now, if it were us, we would’ve wanted our grease to prevent any voltage leakage. And that’s something not many options can offer. However, if you are a privileged user of this product, you will have a great time applying it. So, we would recommend this formula highly.

Though the formula comes in a small tube, it’s worth buying it again and again. For, you can’t let such a versatile option go untried, right? The grease will serve the purpose perfectly for both home and job site applications.

And it would be best if you also considered the online reviews of the users who have been ecstatic after using it. So yeah, it’s a great product at a reasonable price.

#4. CRC Technician Grade Di-Electric Grease (3.3 Oz)

  • Brand: CRC
  • Model:  8542064568
  • Size: 8.75 x 2 x 2 inches
  • Weight: 5.3 ounces

What We Liked
  • Protects against rust and corrosion on metal surfaces.
  • Seals out moisture to prevent short circuits and premature failure of electrical equipment.
  • This product provides long-term protection for all types of equipment from moisture and corrosion.
  • High-performance lubricant that is ideal for use on precision equipment and instruments.
  • It provides a high degree of resistance to moisture and will not become gummy or sticky in hot weather.
  • Top-notch product, an exciting dispenser.
  • Works superbly.
  • High-quality product with low price.
  • Works great in tight small spaces.

What We Didn't Like
  • No major issue was found.

#5. Genuine Ford Fluid XG-3-A 

  • Brand: CRC
  • Model:  8542064568
  • Size: 8.75 x 2 x 2 inches
  • Weight: 5.3 ounces

What We Liked
  • With one tube, you’re good to go for slide pins.
  • The thick and sticky grease is perfect for any electrical connection as it won’t evaporate in the heat or freeze at colder temperatures-meaning that this stuff will work no matter what time of year!
  • It’s also suitable for slide pins on metal contraptions with rubber grips (such as brakes) and spark plug cables so that they won’t corrode over time.
  • You should probably get two tubes to be safe, though, because your car might need them too!
  • Excellent all-around grease.

What We Didn't Like
  • No major issue was found.

This Dielectric Compound and Caliper Grease is an easy-to-use, high-performance silicone brake grease that provides the highest level of corrosion protection for your vehicle’s braking system.

This silicone dielectric compound offers superior electrical insulation properties and resists water washout as it is compatible with EPDM rubber, which makes it a great choice all year round.

Clean, lubricate and protect your vehicle’s disc brake calipers with Genuine Ford Fluid XG-3-A.

This silicone compound is designed to resist heat and water while providing a high-voltage seal for your secondary ignition wires.

The dielectric compound is compatible with EPDM rubber so that it can be used on all OEM applications.

Genuine Ford Fluid XG-3-A is a silicone-based lubricant. It does not contain standard petroleum oils that can dissolve rubber seals and gaskets.

Things to Consider Before Buying

Going into the market without knowing much about dielectric grease can be problematic, and you are unlikely to choose the right product. So, to prepare you fully, we will talk about the factors you need to consider before making a purchase and using dielectric grease.


The grease might be of top quality. But if the applicator isn’t the same, there would be hassles during the work. We often see unhappy users of a particular product only because the applicator isn’t nicely made.

A suitable applicator should apply the grease in the right proportion and amount. And it should be easy to use. Also, when it gets greasy, it should be easy to clean.

Some applicator brushes come with bending ability. This way, they can reach the corners inside the grease container. Check out if the applicator in your chosen product has this feature.

Zero Voltage Leakage

Yes, there shouldn’t be any voltage leakage. The whole point of using the grease around an electrical connection is to seal it. So, what good grease will do if it leaks voltage? So, make sure that the grease will act as an efficient sealant. This way, the money will be worthily spent.

Handling Extreme Temperature

You want the grease to be a good heat insulator. Therefore, it should withstand high temperatures perfectly. Otherwise, you will find it to melt in no time.

Dielectric Grease vs. Vaseline

Dielectric Grease vs Vaseline

So what are the differences between dielectric grease and vaseline? Though these two things differ on many things, people get confused very often. Everyone knows that Vaseline is purely petroleum jelly.

We use it as a moisturizer in dry weather. However, that’s not all it has to offer. You will find petroleum jelly to be a very good lubricator, as well.

Yes, you can use it for lubricating plastics. Also, it can coat wood. Moreover, it acts as an insulator fighting off dirt and salt. So, you can see why people are confused and fail to distinguish between Vaseline and dielectric grease. But there are some differences between them.

Firstly, dielectric grease doesn’t conduct electricity. So, we see it being used around an electrical connection and acting as a sealant. On the other hand, Vaseline is conductive and, therefore, isn’t used in such applications.

Dielectric grease doesn’t melt even if there’s an extremely high temperature. But Vaseline will get burned or melt down quickly when applied heat.  Thus, the more potent formula among the two is dielectric grease.

So, if you want the best result out of lubrication, you should choose dielectric grease as the lubricator, not Vaseline. For, it’s specially made for serving the purpose.

differences between dielectric grease and Vaseline

Dielectric Grease vs Silicone Grease

 Dielectric Grease vs Silicone Grease

If you think that silicone grease is the same as dielectric grease, you would be wrong but excused. For silicone oil is used as an ingredient while making dielectric grease. So, it’s expected to get confused. However, there are a lot of differences between them.

For instance, dielectric grease is non-conductive to electricity. Therefore, it’s used to seal the connections and prevent any corrosion. Thanks to its high withstanding capacity for heat, it won’t melt or burn. So, this type of grease is very much valuable for electrical applications.

On the other hand, silicone grease is mainly used for marine jobs, since it’s highly resistant to water. If you expect it to withstand heat like dielectric grease, you will surely be disappointed. But, if you have rubber to lubricate, you are game. For, it will do the job perfectly.

Since dielectric grease is made to serve more serious purposes, it comes pricier than silicone grease.

There’s another difference between them. While dielectric grease is non-conductive to electricity, silicone grease is also the same. But, unlike dielectric grease, silicone will cure any complicated form.

difference between dielectric grease and silicone grease

Bulb Grease vs Dielectric Grease

Bulb Grease vs Dielectric Grease

While dielectric grease is helpful in many applications, bulb grease only does a particular job. It’s limited to lubricating the bulb only. Yes, it isn’t nearly as versatile as dielectric grease. Besides, you don’t use it as frequently as the dielectric one.

Whenever the bulb is prone to corrosion, you must apply some bulb grease to it. That will prevent corrosion. Now, professionals like to use grease only when there’s corrosion on the terminals. Otherwise, they prefer to use dielectric grease.

Now, dielectric grease can also serve the purpose of bulb grease. And that’s why we see such limited use of bulb grease these days. And it’s only expected since the dielectric grease brings so much versatility.

Why buy all those different greases when you can use a single grease to get many jobs done? Regarding heat insulation, bulb grease might not be as excellent an option as dielectric grease. Its heat-withstanding capacity isn’t anywhere near the dielectric formula.

difference between bulb grease and dielectric grease

Dielectric Grease Substitute / Alternative

Although there are many dissimilarities between dielectric grease and Vaseline, you can still use Vaseline in several applications. If you want to coat wood, it can be a good option. Also, it will be brilliant in lubricating plastic. And it can keep dirt and salt away, but not as efficiently as dielectric grease.

Another option can be bulb grease. But, it will be of limited use. It will serve the purpose only if it’s a battery terminal or tail light. But, it won’t insulate heat as greatly as dielectric grease.

Then there’s the third alternative, which is silicone grease. This thing will do an excellent job when dealing with the rubber. But do not use it when you need the grease to be pliable. For it quickly cures to a solid form.

Now, dielectric grease is the best option for most jobs. We suggest you stick to it unless you choose any other option. It will be challenging to find a proper alternative to it, as you can see. So, you better not think about using other types of grease only to save a few bucks. That won’t be wise.

Frequently Asked Questions

#1. What is Dielectric Grease? 

Answer: Dielectric grease explained here with uses.

Watch the below video to know more about dielectric grease and why you should use it

#2. Is dielectric grease conductive?

Answer: No, it’s not conductive. And that’s the whole point. If it were conductive, people wouldn’t use it as a sealant on any electrical connection. And not only it’s a sealant, but also it acts as an insulator. And that’s why you see it prevent corrosion so efficiently.

When you apply the formula to an electrical connection, it prevents melting. As we saw in our reviews, this can withstand extremely high temperatures like crazy.

#3. Is dielectric grease necessary?

Answer: Yes, it’s very much necessary. When you have a battery terminal prone to corrosion, you badly need dielectric grease. The formula will then ensure that the terminal is nicely protected from unwanted build-up.

Also, it comes in handy to protect plastic, rubber, and other materials. It doesn’t let the spark plug get contaminated too. Therefore, when something so easily accessible and affordable can bring about so much benefit, you need to buy it, period.

#4. What is dielectric grease made of?

Answer: Grease has another name for it. It’s sometimes called silicone grease, though they are not the same. The naming is because silicone oil is used in making the formula. You have polydimethylsiloxane very commonly used as an oil.

Also, it contains a thickener. And we see it in the form of amorphous fumed silica most of the time.

#5. When to use dielectric grease?

Answer: You should use dielectric grease whenever the spark plug is prone to corrosion. If you apply the grease around that plug, it will serve the purpose of an excellent sealant.

As far as marine applications go, you need to apply the grease when the gaskets are likely damaged by water and corrosion. It will prevent any such thing from happening. And if there’s a chance of contamination around the electrical connections, you need to use grease to prevent it.

#6. Where to use dielectric grease?

Answer: You can use it around any electrical connection to prevent melting and corrosion. Since the formula can withstand very high temperatures, it will act as an insulator all too efficiently. People also use it to protect spark plugs from getting damaged by materials.

We’ve seen it be widely used in marine applications too. For it prevents corrosion like nothing else. It also goes well with rubber and plastic.

Final Words

It’s time we wrapped up our best dielectric grease reviews. Now, do not hesitate to go for any of the reviewed products. Each one of them is one of a kind regarding sealing, lubricating, and insulating.

Related Reading:
#1. Gun Grease including Tetra TW25B.

About the author

John Patterson

Hi there! My name is John Patterson. I’m a meticulous guy who loves to deal with the perfect tools for various needs. No matter if it’s a woodworking tool or gardening tool or anything else, I don’t compromise the quality and usability. Since 2010 I’ve been testing different tools for different DIY and professional tasks. Later in 2015, I decided to share my knowledge with the world. I started by answering people in the forums and several Q/A sites like Quora. Then I founded this blog to aid others like you with my knowledge and experience.

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