Longitudinal or helical application during cable manufacturing. It is installed between internal layers of the cable, usually around the core or fiber optic tubes. It can be used as a reinforcement layer or as a primary moisture barrier.

Standard Thickness: 0.30 mm.
Optional Thicknesses: 0.20 mm – 0.25 mm – 0.40 mm – 0.50 mm (available upon request).

Soft Super Absorbing Fiber (SAF™) is the key component in Water Blocking Swellable SAF™ Soft Yarns, which are usually blended with other synthetic fibers such as polyester, nylon, to add strength or additional functionality.

The SAF™ content does not shed when the yarns are being cut and spliced for use. Water Blocking Swellable SAF™ Soft Yarns protect power, telecommunication and special cables by rapidly absorbing water at the point of damage. Upon contact with water, the yarn will swell and form an impermeable barrier.

• Superior water blocking. 
• High thermal stability. 
• Mechanical strength. 
• Lightweight & flexible. 
• Long-term reliability.