Cables with an armored flame retardant sheath can be used indoors where flame retardancy is required and outdoors where mechanical strength and rodent protection are needed. The use of dual purpose armored cable can reduce the costs of terminations in buildings and increase the overall reliability of the system by protection from environmental hazards. A new coated steel with a polyolefin based coating has been developed for bonded sheaths for either optical fiber or metallic cable that has the ability to bond to either polyvinyl chloride (PVC) or halogen-free polyolefins (HFPO) jackets. This coating has a lower melting point versus the standard coatings used for bonding to polyethylene jackets. As a result the bonding to PVC and HFPO jackets is facilitated at the lower melt temperatures associated with the extrusion of these jackets.
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