Abstract: Deterioration of most telephone conductor plastic insulation is restricted to that insulation exposed to the atmosphere. To alleviate this problem, there is disclosed a bag-like first enclosure adapted to be fitted around the terminal portion of a cable terminus from which a plurality of plastic insulated conductors protrude. Either affixed to an inner wall or to one or more of the protruding conductors is a second enclosure that is perforated and contains an antioxidant. Alternatively, the sidewalls of the first container can be made of laminated plastic, the innermost laminate of the laminated sidewall containing 1-50% by weight of an antioxidant.