Abstract: A cable junction has a longitudinally subdivided housing having two connected shell sections which together surround an interior splicing chamber. A pair of shell inserts of fluid-impermeable material is accommodated in the housing about the splicing chamber and they have respective outwardly projecting juxtaposed marginal flanges which are jointly formed with a longitudinal channel bounded at its opposite lateral sides by respective juxtaposed surface portions of the flanges. A strand of sealing material is accommodated in compressed state in this channel.