Water-Swellable Glass Fiber Yarn is a reliable water-blocking material designed for use in optical fiber and communication cables. When exposed to water, its swellable components expand to help limit water migration along the cable, while the glass fiber yarn provides reinforcement and dimensional stability. Suitable for cable manufacturing applications, it can be incorporated into cable designs to support water resistance and dependable performance. ONE WORLD CABLE MATERIALS CO., LTD. is a China Manufacturer and Supplier of cable materials, offering this Product for customers seeking practical solutions for cable production. Contact us to learn more about specifications and availability.