How to protect coax plugs and sockets in outdoor areas and on antennas against weather, humidity, corrosion and dirt.

Not such a good idea: silicone or hot glue

A few years ago, I once tried to protect the SMA connectors of an outdoor WiFi aerial with silicone and then later with hot glue. First the silicone crumbled off, then the hot glue crumbled off after about a year. Both solutions become porous over time and then no longer sit firmly where they should. Based on my own experience, I would therefore advise against this.

Self-sealing adhesive tape is the solution

Special ” self-amalgamating” or “self-sealing adhesive tapes” are much more reliable and designed precisely for this application. These are available from various suppliers, for example “Coax-Seal” *, which is specially designed for antenna connections. This is also used in maritime applications to protect connection ports from aggressive salt water. It holds rock solid. A little tip: If you plan to undo the connection later, you can first stick a layer of normal insulating tape underneath before applying the “Coax-Sealer” tape. This makes it easier to remove the coax sealer later.

Weitere Produkte, die in die gleiche Richtung gehen, sind “Jimator Tape” * und das “3M Scotch 23 Selbtsverschweißendes Isolierband” *.

Other products that go in the same direction are “Jimator Tape” * and the “3M Scotch 23 Self-Welding Insulating Tape” *.