Difference Between Dielectric Grease and Vaseline (With Table)

Factories require a lot of protective measures to the equipment used. It can be an electrical component or a gear shaft, protective measures become inevitable for their longevity and seamless operation. A lot of substances used in the factories come in different forms. There can be insulators, instant protectors or moistening agents.

Such substances are also found to be used at home too. Insulation tapes used in the factories are also used at home to insulate electrical wires. Same way, two types of industry oriented substances play a crucial role in small pieces of machinery or equipment that are of prime importance in a larger scale.

Two most prominent substances that are used in factories are Dielectric Grease and Vaseline. Though they both have extensive usage in the factories, they have different usages altogether.

Dielectric Grease vs Vaseline

The main difference between Dielectric Grease and Vaseline is that the dielectric grease is mainly used for sealing and protecting the electrical circuits and components while Vaseline is majorly used for coating the equipment parts to prevent them from corroding. The preserving strength of the dielectric Grease is more than the Vaseline.


Comparison Table Between Dielectric Grease and Vaseline (in Tabular Form)

Parameters of Comparison

Dielectric Grease



Dielectric Grease is majorly used for sealing and protecting the electric components.

Vaseline r Petroleum jelly is commonly used for coating the iron equipment from corroding.

Conduction of Electricity

Dielectric Grease does not conduct Electricity.

Vaseline conducts electricity

Melting Point

Very High Melting Point

Low Melting Point

Preservation Strength

Very high



Dielectric Grease is expensive

Vaseline is relatively cheaper.


What is Dielectric Grease?

Dielectric Grease is a powerful corrosion resistance grease that is used to protect the equipment and wirings from moisture and other dust substances. It is widely used in many industrial applications as well as household applications. The dielectric grease is mostly insoluble in water, thus making it widely used in underwater types of machinery too. They have the highest melting point hence it has a powerful preservation strength.

The most common usage of dielectric grease is found in spark plug wires and electrical connectors for lubricating purposes. A point of caution is to be taken while using the dielectric grease, it is not a good conductor of electricity, so it must be used sparingly and strategically while using electric connections. Further, it is made out of silicone and also called as silicone grease, it is not advised to use this grease in silicone-based rubbers or even plastics. It may cause the grease to break over time due to chemical reaction.

The applying methods of dielectric grease must follow a particular strategy. While applying, apply it sparingly on the rubber boot and apply it evenly so that it does not touch the iron or electric components adjacent to it. It will cause a high voltage current to pass through seamlessly. At the same time, it also helps the high voltage current to leak inside the rubber. Thus preventing any damage too.

The grease can also play a formidable role in applying it in the roller gaskets. It can be applied to the exteriors of the metal equipment that serves as connectors for seamless functionality and avoids corrosion too.

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What is Vaseline?

Vaseline or otherwise called as Petroleum Jelly is the substance widely used in lubrication. It has the moistening feature that makes this possible. The petroleum jelly has a low melting point, thus it is not advisable to use in places where it is exposed to high temperatures. Further, Petroleum jelly has good electrical conduction property that can be used widely in electrical applications.

Vaseline is mostly used in beauty care but has its prominence in industrial applications too. It is extensively used in the protection of metals and found as a good lubricating agent. It has unique properties, that makes the businesses use this in pharmaceutical and food preparation industry. This does not react readily with any of the chemicals used in such industries.

Considered chemically inert, it has less preservation strength too. Yes, it is also insoluble in water, hence can be used in Wet environments too. Petroleum Jelly is used in many ointment preparations worldwide. It also acts as a protective substance as a coat to the ointments at the same time, chemically used as substitutes for many of the fat substances in the cosmetic industry.

Petroleum jelly is used in mass because of its price and ease to use the property.

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Main Differences Between Dielectric Grease and Vaseline

  1. The main difference between Dielectric Grease and Vaseline is, the preservation strength of Dielectric Strength is more when compared to Vaseline.
  2. Dielectric Grease is widely used in industrial applications and does not find any use in domestic cosmetic use while Vaseline is commonly used in manufacturing cosmetic items.
  3. Dielectric Grease has a very high melting point whereas Vaseline has a very low melting point making it not suitable to use at high temperatures.
  4. Both the Dielectric grease and Vaseline are insoluble in water, but the former is not a good conductor of electricity while the latter is a good conductor.
  5. The price of the dielectric grease is higher compared to the Vaseline.



Vaseline, most generally known as petroleum jelly finds a place in women’s cosmetics. Its less greasy nature and thin texture make it conducive for quick usage. Dielectric grease is the most needed substance in any factory.

The lubricating effect is more and stays longer compared to the Vaseline. Manly, because of Vaseline’s low melting point, it withers out soon. But Vaseline finds it prominence in using it in places where conduction of electricity must not be hampered. Even in the marine usage, both find their applications, but by far dielectric grease is sought for its superior chemical properties.


  1. https://www.tandfonline.com/doi/abs/10.1080/00222739.1976.11688985

Last update on 2022-03-31 / Amazon Affiliate links / Images from Amazon Product Advertising API