The bers, 250μm，are positioned in a loose tube made of a high modulus plastic. The tubes are Iled with a water-resistant Ring compound.A steel wire, sometimes sheathed with polyethylene (PE) for cable with high ber count, locates in the center of core as a metallic strength member. Tubes (and Hers) are stranded around the strength member into a compact and circular cable core.The PSP is longitudinally applied over the cable core, witch is Iled with the Ring compound to protect it from water ingress.Then，the cable is

completed with a PE sheath.

Good mechanical and temperature performance

High strength loose tube that is hydrolysis resistant

Special tube Iling compound ensure a critical protection of ber

Special designed compact structure is good at preventing loose

tubes from shrinking

Crush resistance and exibility

PE sheath protects cable from ultraviolet radiation

The following measures are taken to ensurethe cable watertight:

 1.Steel wire used as the central strength member

 2.Loose tube Iling compound

 3.100% cable core Iling

 4.PSP enhancing moisture-proof