The bers, 250m，are positioned in a loose tube made of a high modulus plastic. The tubes are lied with a water-resistant Iling compound.A Fiber Reinforced Plastic (FRP) locates in the center of core as a non一metallic strength member. The tubes (and Hers) are stranded around the strength member into a compact and circular core. An Aluminum Polyethylene Laminate (APL) is applied around the cable core. Then the cable core is covered with a thin polyethylene (PE) inner sheath，which is lied with jelly to protrct it from water ingress.After a corrugated steel tape armor is applied，the cable is completed with a PE outer sheath.

Good mechanical and temperature performance

High strength loose tube that is hydrolysis resistant

Special tube filling compound ensure a critical protection of fiber

Crush resistance and flexibility

The following measures are taken to ensure the cable watertight:

 1.Steel wire used as the central strength member

 2.Loose tube filling compound

 3.100% cable core fillin

 4.APL moisture barrier

 5.PSP enhancing moisture-proof

 6.Water-blocking material