Dielectric Grease Precautions

[AK Bob]

When applied to electric sockets, connectors, or fittings appropriately, dielectric grease will keep water, moisture, and dust out of your electrical system.

It will also lubricate and protect rubber parts.

Keep in mind that dielectric grease is an insulator and doesn’t conduct electricity.

Usually, this isn’t an issue as most of the grease is scraped off when the connection is made.

Most 5-12V circuits will overcome the resistance created and function normally.

Problems can occur on low-voltage, low-current circuits like the CAN Bus connections, especially if the pin fitment is not tight and less grease is scraped off when connected.

Before simply packing your connectors with this product, consider the circuits and pin fitment.

Also, consider the materials you are applying it to.

Most dielectric grease products are silicone-based; this can cause silicone boots and weather packs to break down and melt over time.

Dielectric grease has a low melting point and, if exposed to high temperatures, will produce formaldehyde gas.

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[watersupply189]

When applied to electric sockets, connectors, or fittings appropriately, dielectric grease will keep water, moisture, and dust out of your electrical system.

It will also lubricate and protect rubber parts.

Keep in mind that dielectric grease is an insulator and doesn’t conduct electricity.

Usually, this isn’t an issue as most of the grease is scraped off when the connection is made.

Most 5-12V circuits will overcome the resistance created and function normally.

Problems can occur on low-voltage, low-current circuits like the CAN Bus connections, especially if the pin fitment is not tight and less grease is scraped off when connected.

Before simply packing your connectors with this product, consider the circuits and pin fitment.

Also, consider the materials you are applying it to.

Most dielectric grease products are silicone-based; this can cause silicone boots and weather packs to break down and melt over time.

Dielectric grease has a low melting point and, if exposed to high temperatures, will produce formaldehyde gas.

Thanks for the tip, Bob.


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[sootmaster]

WOW AK Bob Excellent write up!

Most automotive connectors use protium base lube, like white lube.

This base lube will absorb moisture and hold it!

This will help corrode copper-tin terminals.

If the connector has trapped moisture, you must clean and dry it with a dry cleaner.

Second, fretting corrosion in connectors is a type of wear and corrosion due to small, repetitive, and almost micro-movements at the contact interface.

These movements cause metal to wear and the oxide layer on the contact surface to break down, leading to increased contact resistance and potential failure.

SORRY Break clean is a poor cleaner for electrical connections and will chill like a Coke bottle, attracting moisture, then you apply dielectric grease, trapping the moisture in the terminals.

Copper will attract moisture from the colder outside air.

Anytime you're cleaning connectors, use this or a similar product from your Circuit board computer stores.

Contact cleaners are meant to clean and leave nothing behind; brake clean is unsuitable for this type of use.

Dry by letting compressed air evaporate may chill the terminal, causing moisture or poorly maintained compressor tanks to have high water content in the air flow (WD-40 Specialist Electrical Contact Cleaner Spray).

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