Rigid Armourings identifies Glass Fiber Reinforced Plastic (GFRP) with rectangular cross sections, manufactured with higher quality thermosetting resins, specifically designed for peripheral armouring usage in optic fiber cables, where a dielectric, anti rodent and shot proof protection is required.

Round profile normally used as central strength members in major part of dielectric cable designs, might be used as well as armouring elements in case of design requirement.