Abstract: A kit comprising materials for sealing leaks in low-pressure gas lines. The kit contains, (a) optionally, a container of corrosion-resistant primer composition; and (b) a special laminated tape comprising a ply of rubber such as neoprene and a ply of pressure-sensitive conformable polyer-based adhesive material based on, e.g., ethylene-propylene rubber, and (c) a seal restraining fabric impregnated with a curable resin such as moisture-curable polyurethane which is characterized by good shelf life and a controlled curing speed when subjected to moisture. The tape of the invention also relates to the novel protective patch structures which are formed by use of the kit material.

Abstract: A kit comprising materials for protecting splices of electrical cables. Such splices as must be maintained underground between cables used in providing cathodic protection against corrosion to buried pipelines. The kit contains (a) a malleable butyl rubber composition having good low-temperature brittleness and exhibiting some cold flow characteristics, (b) a restraining fabric impregnated with a curable resin such as moisture-curable polyurethane which is characterized by good shelf life and a controlled curing speed when subjected to moisture. The invention also relates to the novel protected spliced structures which are formed by use of the kit material.

Abstract: A wire splice insulator for underground wire splices and the like is provided in the form of a pair of substantially rigid flat base members in side by side relationship, a sheet of soft conformable self-sealing cohesive elastomer beneath and adhered to said base members, a dome extending outwardly from each said base member and elastomer sheet generally centrally of the base member and forming a cavity in the base member and elastomer sheet, a plurality of semi-tubular shields in each base member and elastomer sheet extending from the dome to adjacent the edge of the base members and forming semi-cylindrical cavities in said base members and sheets, said domes and tubular sheathes in the pair of base members being mirror images of each other, a soft non-hardening mastic adhesive insulating material filling the cavities in the elastomer and a parting sheet on the elastomer sheet and mastic opposite the base members.