... fast delivery 4, customized Silicone heating wire: silicone rubber heating cable comprises alloy heating wire, silicone rubber and high temperature insulation cloth. ... ) alloy wires as core wire, coated with silicon rubber/PVC insulation as jacket. features 1, great heat- ... discharge. 3, flame retarding and self-extinguishment: because silicone rubber doesn't contain halide, when burns, no smoke or ...