Optotelecommunications tube cables, self-supporting, octal.S-XOTKtsd - self-supporting cable, figure-eight (S), with polyethylene (X) coating, optotelecommunication (OTK), horn (loose tube), with dry center seal (ts), completely dielectric support element (d).Construction:Optical fiber:Singlemode (J)Singlemode with non-zero offset dispersion (Jn)Multimode (G/50)Multimode (G/62.5)Tube: Central with optical fibers, filled with thixotropic gelSealin..