Connector Lubricants

There are numerous advantages gained by lubricating electrical connectors – guarding against oxidation, fretting corrosion, contact wear and extending connector life. A thin film of lubricant can also reduce mating force by as much as 80 percent, an important factor in connector assembly. For electronic connectors with dozens or even hundreds of pins, or for automotive connectors that are in hard-to-reach places, a low insertion force makes assembly more efficient and ensures solid connections. For gold-plated connectors an effective lubricant reduces the potential for noble metal wear during mating and separation.

The products discussed below are suitable for electronic/electrical applications and data connections – both digital and analogue.

A guard against corrosion – Lubricants guard against oxidation and the effects of harsh environments. With gold-plated connectors this means protection against substrate corrosion. Thin gold plating can be microscopically porous and a thin film of lubricant can seal the pores, prevent substrate attack and assure low contact resistance.

Preventing fretting corrosion – is another key ability of a quality connector lubricant. In addition to atmospheric corrosion, tin/lead connectors are also subject to ‘fretting corrosion’ which is the result of low amplitude vibration caused by thermal expansion and contraction and/or nearby motion from fans, motors/engines or anything else that causes the connector to vibrate. Fretting corrosion continually exposes fresh layers of the metal surface to oxidation, in addition to the micro abrasion and associated debris. A lubricant film minimises metal to metal contact during vibration, protecting the connector from metal wear. Take a look at the supporting information sheet Why Grease? –  Facts & Myths to help understand the facts & myths associated with connector lubrication.

The products discussed below are suitable for electronic/electrical applications and data connections – both digital and analogue. Also these lubricants can be used on tin, lead, copper and noble metals and are compatible with most plastics (however a test is always recommended).

We have two test videos that may be of interest. One video demonstrates that using a specialist connector lubricant from Nye Lubricants does not cause increased circuit resistance when compared to a connector that is unlubricated. The other video is specific to the Nyogel 760G product, demonstrating the water resistance/water ingress protection capabilities of this connector grease. Take a look:



Have you seen ourTechnical Supportwebsite (link opens in new tab) where we have more videos, product selection guides and test videos.

The products mentioned above are the more popular from the connector lubricant range. If you do not find a product that fits your needs then please contact us as we have many more formulations on file for a large variety of application types.

If you connector lubricant requirement is due to fretting corrosion, our new product fretting performance graphic may help you select: