I am looking to protect a phoenix contact terminal which is exposed to the elements. When the units come back for servicing I can see that they have corrosion on the contact. I recall purchasing wire nuts pre-packed with grease for the very same reason. I'd like to buy a tub/tube of a similar grease to pack inside these connectors.

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    \$\begingroup\$ Not worth an answer, but I've just used a dab of vaseline (petroleum jelly) on RJ11/RJ45 jacks. I've also used a squirt of WD-40 to just keep the moisture off in some instances, but vaseline tends to do it for most cases. \$\endgroup\$ – akohlsmith Dec 27 '12 at 22:10
  • \$\begingroup\$ Try "Light Bulb Grease", auto or boating supply stores. \$\endgroup\$ – Optionparty Dec 27 '12 at 22:43

Dielectric Grease. Cheap, non-conducting, doesn't harden over time. Any auto store will have it.

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