A novel, reliable, moisture migration preventing cable connector for non-standard port attachment is provided. Such a connector device includes a deformable sealing element that is clear of mating port threads during connector attachment to a cable port, but that deforms upon actuation of a mated thread device rotated around the connector subsequent to cable port attachment. Such deformation allows for the sealing element to enter the open areas of the mated threads thereby preventing the migration of moisture into the cable connector, protecting not only the connector threads, but also the mating port, as well as the internal dielectric and center conductor of the cable itself. A method of providing a signal connection and transfer in a cable system is also encompassed within this invention.