Water Blocking Fiberglass Yarn is a high-performance cable material designed to reinforce cables and help prevent water from spreading along their cores. Combining strong fiberglass yarn with water-swellable components, it expands when exposed to moisture to form a barrier. Suitable for a range of cable designs, this product offers reliable tensile reinforcement and efficient water blocking. ONE WORLD CABLE MATERIALS CO., LTD. is a China Manufacturer and Supplier of cable materials, including Water Blocking Fiberglass Yarn. Contact us to learn more about this product and its specifications.