Is silicone grease the same as dielectric grease?

Asked By: Peregrino Twenhovel | Last Updated: 3rd February, 2020
Category: automotive road side assistance
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Dielectric grease does not conduct electricity and stays pliable (it does not cure), while silicone grease does not conduct electricity either but cures to a hard form.

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Also to know is, is silicone a dielectric grease?

Silicone grease, sometimes called dielectric grease, is a waterproof grease made by combining a silicone oil with a thickener. Most commonly, the silicone oil is polydimethylsiloxane (PDMS) and the thickener is amorphous fumed silica.

Similarly, what is a good substitute for dielectric grease? Just don't use anything with silicone or petroleum distillatesthey will eventually damage the rubber. Silicone does not damage the rubber, but petroleum distillates do damage the rubber. Dielectric grease is silicone-based. McMaster sells a 5.3-oz tube for $15, so if you can get it for $5, go for it.

In this way, is dielectric grease the same as silicone paste?

Dielectric grease and silicone paste are essentially the same thing. they are both made predominantly of silicone; silicone is made from silicone oil and fumed silica.

Is Vaseline a dielectric grease?

Dielectric grease refers to a translucent substance that is mainly used to seal and protect electrical conductors against sand, dirt, dust, or other foreign materials. Vaseline, on the other hand, is a term used to refer to petroleum jelly.

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Where should you not use dielectric grease?

Since dielectric grease is a silicone grease, it should not be used on silicone-based rubbers or plastics, as it will break them down over time. The grease does not conduct electricity, so it shouldn't be applied directly to the mating surfaces (pins and sockets) of an electrical connection.

What is the best dielectric grease?

Best Dielectric Grease: Top 3 Formula in the Market
  • Permatex 22058 Dielectric Tune-Up Grease, 3 oz. Tube.
  • CRC Dielectric Grease, 16 oz, Net 10 oz. ( 03082), Opaque White.
  • Mission Automotive Dielectric Grease/Silicone Paste/Waterproof Marine Grease (8 Oz.) Made in USA- Excellent Silicone Grease.

Can I use Vaseline instead of silicone grease?

At room temperature they both should work fine. However, vaseline being a low molecular weight paraffin has a very low melting point. Silicone grease is designed for high temperature applications.

Is WD 40 silicone grease?

WD-40® Specialist®Water Resistant Silicone Lubricant safely lubricates, waterproofs and protects metal and non-metal surfaces such as rubber, plastic and vinyl. This formula dries fast and leaves a clear, non-staining film that doesn't stick or make a mess.

What kind of grease conducts electricity?


The 846 Carbon Conductive Grease is an electrically conductive silicone grease for improving electrical connections between sliding surfaces and parts. The 846 grease is designed to lubricate while maintaining good grounding connection.

Does silicone grease dry out?

Silicone grease will not deteriorate, dry up or flow out of the threading area (if it's the sticky, greasy type rather than the oily variety).

Should you put dielectric grease on ignition coils?

It is a preferred grease for automotive ignition applications because ignition systems use rubber boots to keep the spark plugs and spark plug wires away from moisture Silicone dielectric grease is used on the bottom of the inside of the ignition coil boot where the spark plug meets the ignition coil.

Can I use silicone grease on brake pads?

Super Lube® Silicone Lubricating Brake Grease can also be used to dampen vibrations between disc brake pads and caliper pistons. It should NOT be applied between the pads and any noise suppression shims. Use it sparingly on the back of a bare pad or between the pad shim and caliper.

What is the best lubricant for brakes?

Our pick for the best brake caliper grease is the Mission Automotive Dielectric Grease/Silicone Paste/Waterproof Marine Grease. It's waterproof and seals and protects various components, including brake caliper pins. For a more budget-friendly option, consider the Permatex Ultra Disc Brake Caliper Lube.

What is the best lubricant for rubber?


A silicone lubricant is the best thing to use for lubrication of rubber parts.

When should I use silicone lubricant?

Use silicone to lubricate metal, wood, rubber and plastic. However, dust and dirt stick to silicone, so use it sparingly or use a “dry” version in dirty environments. The biggest downside to silicone spray lubricant is that once you apply it to an object, you can never paint or stain it.

Can I use dielectric grease on O rings?

Dielectric grease is a non-conductive, silicone grease designed to seal out moisture and, therefore, prevent corrosion on electrical connectors. It is important to note that dielectric grease will melt silicone rubber over time, and thus should not be used on connectors, such as o-rings, that are made of this rubber.

Can I use regular grease on electrical connections?

It is not necessary to employ such a skillfully formulated grease to keep moisture from the terminal of a 12-volt battery. Indeed, it is common that general purpose marine grease can be used as an electrical insulating grease in 12-volt systems.

What is plumbers silicone grease used for?

Hercules Plumbers Silicone Grease is a superior product that lubricates and prevents corrosion on valve stems, faucets, ballcock linkages, and other places where waterproof grease is needed. When applied to rubber and synthetic O-rings, insures free movement and extended service life of faucets.

Can you use too much dielectric grease?


Dielectric grease is an insulator. It should be used sparingly for corrosion resistance. Yes, if gooped on too heavily, it will cause issues.

Is Vaseline good for electrical connections?

Petroleum jelly and similar products, if pure, are not conductors. In electrical engineering, petroleum jelly is often smeared on terminals as a measure to prevent corrosion, especially battery terminals.

How do you clean up dielectric grease?

Normally this is not an issue, but in this case dirt and grime has got into the grease and the whole thing needs to be cleaned out, scrubbed and sprayed with contact cleaner and put back with more reasonable amounts of dielectric grease. I typically clean grease with either a lye or non-lye based water degreaser.