Radio Frequency Antenna with Two Piece Sealing Ferrule

A radio frequency antenna comprising:

• a center antenna;
• a tube surrounding the center antenna;
• a mounting nut surrounding and slidable along the tube;
• an outer ferrule surrounding and slidable along the tube;
• an inner ferrule separate from the outer ferrule and surrounding and fixed to the tube;
• and
• a mating nut secured to the mounting nut;
• wherein the threading of the mounting nut and the mating nut together wedges the inner and outer ferrules together and results in the exertion of a first compressive force by the inner ferrule against the tube for sealing the inner ferrule and the tube and the exertion of a second compressive force of the inner ferrule against the mating nut for sealing the inner ferrule and the mating nut.

A radio frequency antenna comprising:

• a center antenna;
• a tube surrounding the center antenna;
• a mounting nut surrounding and adapted for sliding movement relative to the tube;
• an outer ferrule surrounding and adapted for sliding movement relative to the tube;
• an inner ferrule separate from the outer ferrule and surrounding and fixed on the tube and including a collar extending into an end of the outer ferrule and a radial end face;
• and
• a mating nut secured to the mounting nut and including an interior shoulder;
• wherein the threading of the mounting nut and the mating nut together results in the exertion of a first compressive force by the inner ferrule against the tube for sealing the inner ferrule and the tube and the exertion of a second compressive force between the interior shoulder of the mating nut and the radial end face of the inner ferrule for sealing the inner ferrule and the mating nut.