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Re: Advice on installing NMEA 2000 field installable connectors?
Boeshield is for surface corrosion on metals, not electrical contacts. Stick to silicone grease (aka light bulb grease, high temperature vacuum grease, auto brake grease, ignition point grease) which will not migrate, will not evaporate, will not attack any metals or plastics in the assembly.
If you really want to seal it all up--after making Real Damn Sure it works--paint the whole thing with 3-4 coats of "Liquid Lectric" or vinyl tool handle dip. That seals it 100%. You can do that faster, if a bit more bulky, with silicone self-fusing tape or butyl self-fusing tape or "coax shield" tape. Silicone tape is also sold as "rescue tape" but for $10 at WalGreens you get three rolls in the "As seen on tv" section. Available at the hardware stores, in the plumbing section, at twice the price. The butyl self-fusing tape is in the electrical section. And the coax-shield only from electronics stores.
Any one of them will give you a long-term waterproof seal that can be peeled off later if need be. I'd expect the silicon grease (on the wires) and Loctite (on the screws) to be enough unless you're expecting active spray on the connector.