OArP-8Å4(2õ4)-7 A cable is optical, single mode, armouring aramiding filaments.It is intended for a gasket into building, in tunnels and collectors,in the blocks, in polyethylene protective pipes (including by the pneumatic method), on power substations, on supports of contact network, in default of threat of damage by rodents.Central power element. 8 fibres. 4 elements. Optical module with filling by a water-repellent additive. Internal polymeric shell. Layer of aramiding filaments. Outward polyethylene shell. effort on the tension 7kN