2

My father and I have been re-wiring our home's telephone lines, and in doing so, we found these components attached to loose wires.

Mystery Components

They are both labelled "3M". One says "C22" and the other says "B27".

I think they might be end caps for the wires, but we've never seen anything similar. Does anyone know what they are?

rartorata
  • 542
  • 1
  • 12
Phinet
  • 123
  • 3

1 Answers1

8

They are used to splice (unstripped) wires together. They contain a small piece of metal that joins the wires when the colored part is compressed, as well as some containing a gel that insulates the wires from the elements making them suitable for outdoors use.