Electrical Greases

Felipe Russell
10 min readJun 18, 2024


Electrical grease, the unsung hero of the electrical industry, is an essential component in ensuring smooth and efficient operation of electrical machinery. In this article, we bring you a roundup of the top electrical greases available in the market today, helping you make an informed decision for your next electrical project. Get ready to discover the must-have electrical greases that will revolutionize your electrical work.

The Top 5 Best Electrical Greases

  1. Permatex Electrical Connections Lubricant — Dielectric Grease — Permatex Dielectric Grease: Protect electrical connections, extend bulb socket life, and enhance spark and fire power — A must-have for modern high energy ignition systems.
  2. Gardner Bender Dielectric Grease for Electrical Connections and Insulation — Gardner Bender’s Gcd-003 Dielectric Grease extends connector life, protects against water and corrosion, and enhances electrical performance in harsh weather conditions, making it an essential tool for outdoor electrical connections.
  3. High-Quality Dielectric Tune-Up Grease for Spark Plug Applications — Rev up your engine with Permatex 22058 Dielectric Tune-Up Grease, a high-quality and easy-to-use spark plug grease that provides effective protection and easy installation, all in one convenient tube.
  4. Loctite 37534 High-Performance Electrical Dielectric Grease — Loctite 37534 Dielectric Grease: A versatile, high-performance solution for tuning up electrical systems with robust protection against voltage leakage and superior lubrication for various surfaces.
  5. Dielectric Grease for Spark Plugs and Electrical Connections — Protect and lubricate your electrical equipment without mess with the versatile, moisture-proof and high-dielectric strength Permatex Counterman’s Choice Dielectric Grease.

As an Amazon Affiliate, I earn from qualifying purchases at no cost to you


Permatex Electrical Connections Lubricant — Dielectric Grease


The Permatex Electrical Connections Lubricants, Dielectric Grease is a versatile product that provides several benefits to electrical connections and wiring. It protects against salt, dirt, and corrosion, extending the life of bulb sockets and preventing voltage leakage around electrical connections.

It’s suitable for spark plugs, too, preventing them from fusing to boots and maximizing spark and fire power. This 28 g tube is necessary for modern high-energy ignition systems, though it comes with specific warnings and care instructions.

Despite its high rating of 4.8 and a substantial number of positive reviews, there might be some users who notice a lack of results. Overall, this dielectric grease is a reliable and effective solution for a wide variety of electrical needs.

Gardner Bender Dielectric Grease for Electrical Connections and Insulation


Every time my car started acting up and I would take it to the shop, they would put a tube of Gardner Bender’s Dielectric Grease on it. That stuff saved my car from an early burial, and I owe Gardner Bender big time.

Living in Florida, this grease is essential for my outdoor needs. It not only prevents water from diving into my electrical connections, but it also fights off the corrosion that loves to make its home in the saltwater. In those hot summer afternoons, I can trust that my car’s performance won’t wane; this grease keeps everything running smooth.

One time, I tried making my own grease recipe. Well, let’s just say it didn’t last long, and the difference was palpable. I swear, nothing beats the high-quality silicone composition of Gardner Bender’s product. It fights off those voltage drops like a warrior in battle, keeping my electrical connections secure and robust.

However, it does take a bit of assembly knowledge to use this grease. You need to know where to put it and when. It’s not like slapping some salad dressing on a sandwich. But once you figure it out, you’ll wonder how you ever live without Gardner Bender’s Dielectric Grease.

High-Quality Dielectric Tune-Up Grease for Spark Plug Applications


I recently tried the Permatex Dielectric Tune-Up Grease while working on a small electrical project. This 3 oz grease tube comes with 10 convenient pre-measured epoxy mixer cups, which I found to be quite useful in the application process. The grease is a versatile product, perfect for bonding glass, hard plastics, rubber, and metal. Its excellent chemical resistance ensures that the bond remains strong for a long time.

One of the outstanding features of this grease was its ability to fill porosities and build up worn parts. In my experience, I found it to be simple and easy to use, which is a great advantage when you’re handling delicate parts that require precision. However, I did notice that it could get a bit messy, and I had to ensure I wore gloves to avoid any residue on my hands.

Another aspect I appreciated was its ability to bond in just 5–15 minutes. This speed was particularly helpful when I was working on a tight schedule and had to complete the project quickly. Overall, this dielectric grease proved to be a reliable and effective solution for my electrical needs.

Loctite 37534 High-Performance Electrical Dielectric Grease


Loctite’s Dielectric Grease is a top-notch option for anyone in need of an efficient and reliable electrical grease. With its average rating of 4.7 and 15 reviews to back it up, the grease is a go-to choice for those seeking to protect their electrical connections.

While the 0.06 lb weight may seem a bit light, users have found it to be effective in its primary functions. The dielectric grease has been praised for facilitating and improving tune-ups, preventing voltage leakage, and boasting excellent lubrication qualities on rubber, plastic, and ceramic surfaces. Users also noted that it is helpful in preventing spark plug boots from fusing to spark plugs, making it a great addition to any toolbox.

However, it’s essential to note that some users have mentioned the tube size being a bit small, causing them to use more than anticipated. Nevertheless, most users still found it to be a good product, well worth the investment. For those looking to protect their electrical connections and enhance their work’s efficiency, Loctite’s Dielectric Grease is definitely worth considering.

Dielectric Grease for Spark Plugs and Electrical Connections


Introducing the Permatex Dielectric Grease, designed for use with spark plug boots and electrical connectors. This versatile product offers a moisture-proof barrier, providing lubrication and protection against salt, dirt, and corrosion. The single-use, premium chemical compound is housed in convenient pouches featuring an “Easy Squeeze Spout” that ensures accurate dispensing and minimizes waste. With applications ranging from automotive and marine electrical connections to battery terminals, this dielectric grease is a must-have for various repair jobs.

However, some users have reported minor issues with messiness and the need for more product than initially anticipated. Despite these concerns, the majority of users praise the product’s effectiveness, ease of use, and high-quality construction. The Permatex Dielectric Grease proves to be a valuable addition to any toolbox, making electrical connections a breeze and ensuring lasting protection.

Buyer’s Guide

Electrical grease is a crucial component in maintaining and ensuring the proper functioning of electrical equipment. It aids in preventing wear and tear of electrical components by creating a protective barrier against friction, corrosion, and oxidation. Selecting the right electrical grease can significantly enhance the durability and performance of electrical systems. This buyer’s guide will walk you through the key features, considerations, and general advice for selecting the best electrical grease.

Important Features of Electrical Grease

When shopping for electrical grease, consider the following features:

  1. Viscosity: The viscosity of electrical grease determines its flow rate and its ability to lubricate the moving parts efficiently. Choose the right viscosity depending on the application and operating temperature range. 2. Resistance to high temperatures: High-temperature electrical greases can withstand extreme temperatures without losing their lubricating properties. 3. Chemical resistance: Opt for electrical greases that offer excellent resistance to various chemicals in order to prevent corrosion and oxidation. 4. Non-flammability: Select non-flammable electrical greases to ensure safety in electrical applications.

Considerations for Selecting Electrical Grease

Before making a purchase, consider the following factors:

  1. Operating environment: The type of electrical grease required will depend on the operating environment, including temperature, humidity, and exposure to harsh chemicals. 2. Application: Different components within an electrical system may require specific types of electrical grease based on their function. 3. Compatibility: Ensure that the electrical grease is compatible with the materials used in the electrical system, such as metals, plastics, and elastomers. 4. Cost: Consider the cost of the electrical grease, taking into account the quantity required and the overall budget for maintenance and repairs.

General Advice for Using Electrical Grease

To ensure optimal performance, follow these guidelines:

  1. Apply the appropriate amount: Use the right amount of electrical grease to achieve maximum efficiency without causing excess buildup or contamination. 2. Clean and preparation: Prior to application, ensure that the electrical components are clean and free from any dust or debris. 3. Timing: Apply electrical grease at regular intervals to maintain optimal performance and prevent premature wear and tear. 4. Training: Employees should be trained in the proper application, selection, and disposal of electrical grease to ensure safety and efficiency.

In conclusion, electrical grease plays a vital role in the maintenance and longevity of electrical systems. Selecting the proper electrical grease, considering the right factors, and following the proper application methods will help ensure the optimal performance and safety of electrical systems. By selecting an electrical grease that meets the requirements of your specific application, you can safeguard your investment and prolong the lifespan of your electrical equipment.


What is Electrical Grease?

Electrical grease, also known as dielectric grease, is a type of lubricant used to protect electrical equipment and components from moisture, corrosion, and dirt. This grease serves as an insulator, preventing the flow of electrical current between metals and other components. By doing so, it helps to ensure the smooth operation of electrical devices and systems.

Dielectric grease is commonly used in electrical applications such as connecting wires and terminals, maintaining contact between components, and providing protection to connectors and other electrical contacts. It is available in various viscosities and forms, including liquid, gel, and solid, depending on the requirements and application.

What are the benefits of using Electrical Grease?

Some of the key benefits of using electrical grease include: improved reliability and longevity of electrical components, reduced risk of corrosion and electrical shorts, better protection against contaminants such as moisture, dirt, and dust, and enhanced performance in harsh operating environments. By using electrical grease, you can ensure the smooth operation of electrical devices and systems, reduce the frequency of maintenance requirements, and minimize the potential for costly downtime.

In summary, electrical grease plays a crucial role in protecting electrical equipment and components, improving performance, and increasing the overall reliability and efficiency of electrical systems. By applying electrical grease, engineers and technicians can address a wide range of concerns related to electrical devices and components.

What should I consider when selecting an Electrical Grease?

When selecting an electrical grease, it is essential to consider the following factors: its dielectric properties, viscosity, and compatibility with the materials and components being used. The dielectric rating should be appropriate for the voltage and frequency of the electrical system, while the viscosity should match the specific application requirements.

Additionally, it is crucial to select an electrical grease that is compatible with the materials and components being used in the electrical system. Some greases may not be suitable for all materials, such as rubber or plastic, so it is essential to consult with the manufacturer or supplier for recommendations based on your specific needs.

How should I apply Electrical Grease?

To ensure proper application and effectiveness, follow these guidelines when applying electrical grease:

  1. Clean the surface or component thoroughly to remove any dirt, dust, or contaminants. 2) Apply a sufficient amount of grease to the surface or between the components, making sure to cover all necessary areas. Avoid over-applying grease, as this can lead to increased resistance and reduced performance. 3) Make sure to cover any exposed metal surfaces or connections to prevent corrosion and electrical shorts. 4) Allow the grease to cure and set properly before operating the electrical component. This may involve waiting for a specific amount of time or applying heat to accelerate the curing process.

It is also essential to reapply grease when needed, as the protective properties may diminish over time due to wear or environmental factors. Regular maintenance checks should be performed to ensure proper grease application and protect the electrical system from potential issues like reduced performance or safety concerns.

What should I do if Electrical Grease leaks or spills?

If electrical grease leaks or spills, it is crucial to clean it up immediately to prevent contamination or damage to the surrounding area. Use appropriate protective equipment such as gloves and safety glasses to avoid direct contact with the grease. Wipe up the spill using a clean, absorbent material, and dispose of the contaminated materials accordingly.

If the spill occurs in a sensitive area, such as near electrical equipment or components, it is essential to promptly inform the appropriate personnel to minimize the risk of electrical damage or safety concerns. Proper precautions and clean-up procedures should be followed to ensure the safety and integrity of the electrical system.

Are there any environmental concerns associated with Electrical Grease?

While electrical grease is generally considered to be environmentally friendly, some components of the grease may have ecotoxicological concerns. For instance, certain chemicals found in electrical greases can pose risks to the environment, particularly when released into water bodies or soil. As a result, it is crucial to use electrical greases that are designed to minimize environmental impact and follow proper disposal and recycling guidelines.

When disposing of electrical grease, it is essential to consult with the manufacturer or supplier for the appropriate methods based on the specific product. This may include recycling or proper disposal in accordance with local, regional, and national regulations. By adhering to these guidelines, you can help reduce the environmental impact associated with the use of electrical grease while still ensuring the protection and performance of your electrical systems.

As an Amazon Affiliate, I earn from qualifying purchases at no cost to you