Novel copper core rod and sealing element

The utility model discloses a novel copper core rod which comprises a copper rod and a metal tube wrapped on the periphery of the copper rod, one end of the copper rod is expanded outwards to form a head portion located outside the metal tube, and a silver-copper alloy brazing ring is at least fixed on the surface, facing the copper rod, of the head portion. The end, close to the head, of the metal pipe is fixed to the silver-copper alloy brazing ring, and a gap is formed between the inner wall of the metal pipe and the outer wall of the copper rod. The utility model further discloses a sealing element. The novel copper core rod and the sealing element provided by the utility model are good in sealing performance and better in conductive performance. 本实用新型公开了一种新型铜芯棒，包括铜棒和包裹在铜棒外围的金属管，所述铜棒的一端外扩形成位于金属管外的头部，至少在头部朝向铜棒的表面固定有银铜合金钎焊环，金属管接近头部的一端固定于该银铜合金钎焊环上并且金属管的内壁与铜棒的外壁之间形成间隙。本实用新型还公开了一种密封封接元件。本实用新型的新型铜芯棒及密封封接元件密封性好，导电性能更佳。