The bers, 250m，are positioned in a loose tube made of a high modulus plastic. The tubes are Iled 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 Ilers) are stranded around the strength member into a compact and circular core. After the cable core is Iled with the Iling compound，it is covered with thin PE (polyethylene) inner sheath.Then，a layer of aramid yarn is applied as additional strength member and the cable is completed with a polyethylene (PE) outer sheath.

Good mechanical and temperature performance

Aramid yarn strength member ensure good performance of tensile strength

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 ensurethe cable watertight:

 1.Steel wire used as the central strength member 

 2.Loose tube filling compound

 3.100% cable core filling