{"id":28583,"date":"2026-04-26T07:12:31","date_gmt":"2026-04-26T07:12:31","guid":{"rendered":"https:\/\/doingcable.com\/?post_type=product&p=28583"},"modified":"2026-06-22T08:35:53","modified_gmt":"2026-06-22T08:35:53","slug":"water-blocking-yarn-water-swellable-yarn","status":"publish","type":"product","link":"https:\/\/doingcable.com\/tr\/product\/water-blocking-yarn-water-swellable-yarn\/","title":{"rendered":"Su Engelleme ve Emme \u0130pli\u011fi"},"content":{"rendered":"

In modern cable manufacturing, preventing longitudinal water migration is critical to preserving electrical and optical integrity in wet, underground, submarine, flooded, or high-humidity environments. Water Blocking Yarn<\/strong> (also known as Water Swellable Yarn) is a high-performance specialty material that combines high-tenacity industrial polyester (PET) or nylon\/aramid filaments with superabsorbent polymers<\/strong> (SAP)<\/strong> and specialized adhesives or coatings.<\/p>\n

When water contacts the yarn, the SAP rapidly absorbs moisture and expands to form a dense, cohesive gel that seals cable interstices and blocks further longitudinal penetration\u2014while preserving mechanical strength, flexibility, and production efficiency.<\/p>\n

As a trusted B2B supplier with decades of global project experience in cable materials and complete technical solutions, we position Water Blocking Yarn<\/strong><\/a> as a clean, lightweight, and highly effective alternative to traditional flooding compounds, water-blocking tapes, or loose powders. It delivers proven swelling performance, excellent processability on high-speed stranding and binding lines, and reliable compliance with international standards, making it the preferred choice for manufacturers of optical fiber, telecom, control, instrumentation, and power cables who demand dependable moisture protection without compromising cable design, weight, or splicing operations.<\/p>\n

\"Water<\/p>\n

How Water Blocking Yarn Works: Dual-Structure Design for Reliable Protection<\/h3>\n

Water Blocking Yarn integrates two critical components into a single high-strength filament:<\/p>\n

    \n
  • Reinforcing base<\/strong>: High-tenacity polyester filament provides excellent tensile strength and elongation, ensuring smooth processing during stranding, binding, or ripcord applications.<\/li>\n
  • Swelling layer<\/strong>: Superabsorbent polyacrylic ester powder and fibers that expand rapidly upon water contact to form a cohesive gel barrier.<\/li>\n<\/ul>\n

    This dual design fills gaps between conductors, fibers, tubes, or layers instantly, preventing water treeing, conductor corrosion, and dielectric degradation while maintaining cable flexibility and low weight. The gel remains stable over the cable\u2019s service life with minimal syneresis.<\/p>\n

    \"Water<\/p>\n

    Ba\u015fl\u0131ca Teknik Avantajlar ve Performans Faydalar\u0131<\/h3>\n

    H\u0131zl\u0131 ve Y\u00fcksek Verimli \u015ei\u015fme<\/strong> Achieves fast swelling kinetics (\u22656\u201312 mm in the first minute) with high gel strength, effectively blocking water migration and passing stringent water penetration tests.<\/p>\n

    Superior Mechanical Properties<\/strong><\/p>\n

      \n
    • Tensile strength: 20\u201395 N (depending on denier)<\/li>\n
    • Elongation: 15\u201330%<\/li>\n
    • Low dust and clean handling compared to loose powder<\/li>\n<\/ul>\n

      These properties support high-speed automated production without tearing or residue.<\/p>\n

      Versatile Configurations<\/strong> Available in a wide range of deniers (286\u20132,150 dtex or higher) and customized SAP loadings to match loose-tube, ribbon, micro-cable, or power cable designs. Both standard and saltwater-resistant grades are offered for submarine applications.<\/p>\n

      Termal ve \u00c7evresel Kararl\u0131l\u0131k<\/strong><\/p>\n

        \n
      • Short-term processing temperature: Up to 230\u00b0C<\/li>\n
      • Long-term service temperature: Up to 90\u2013150\u00b0C<\/li>\n
      • Low moisture content, pH neutral, and full REACH & RoHS compliance<\/li>\n<\/ul>\n

        The gel remains stable over the cable\u2019s service life with minimal syneresis.<\/p>\n

        Clean, Cost-Effective & Splicing-Friendly<\/strong> No messy gels or additional blowing equipment required. The yarn can be cut with standard tools, significantly reducing splicing time and labor compared to flooding compounds.<\/p>\n

        \"Water<\/p>\n

        Kablo Sistemlerinde Ba\u015fl\u0131ca Uygulamalar<\/h3>\n

        Water Blocking Yarn is incorporated during conductor stranding, loose-tube filling, or layer binding in:<\/p>\n

          \n
        • Optik Fiber Kablolar<\/strong> (loose tube, ribbon, micro-cables, and submarine designs)<\/li>\n
        • Communication, Data & Telecom Cables<\/strong><\/li>\n
        • Kontrol ve Enstr\u00fcmantasyon Kablolar\u0131<\/strong><\/li>\n
        • Orta ve Y\u00fcksek Gerilim G\u00fc\u00e7 Kablolar\u0131<\/strong> (including fan-shaped conductors)<\/li>\n
        • Submarine, Underwater & Outdoor Cables<\/strong> nem riskine maruz kalma<\/li>\n<\/ul>\n

          It is particularly effective in dry-core designs and hybrid constructions where lightweight, clean water blocking combined with mechanical reinforcement is required.<\/p>\n

          \"super<\/p>\n

          Teknik \u00d6zellikler<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
          \u00d6zellikler<\/th>\nYarn Density (Dtex)<\/th>\nBasis Weight (m\/kg)<\/th>\nBreaking Strength (N)<\/th>\nElongation (%)<\/th>\nSwelling Rate (ml\/g\/1st min)<\/th>\nLong-term Thermal Expansion (150\u00b0C, 24h, ml\/g)<\/th>\nTransient Thermal Expansion (230\u00b0C, 10min, ml\/g)<\/th>\nWater Content Rate (150\u00b0C, 1min, %)<\/th>\n<\/tr>\n<\/thead>\n
          700D<\/strong><\/td>\n780<\/td>\n12,857<\/td>\n\u226550<\/td>\n\u226515<\/td>\n\u226560<\/td>\n\u226565<\/td>\n\u226565<\/td>\n\u22649<\/td>\n<\/tr>\n
          1500D<\/strong><\/td>\n1,670<\/td>\n6,000<\/td>\n\u226550<\/td>\n\u226515<\/td>\n\u226560<\/td>\n\u226565<\/td>\n\u226565<\/td>\n\u22649<\/td>\n<\/tr>\n
          2000D<\/strong><\/td>\n2,220<\/td>\n4,500<\/td>\n\u226560<\/td>\n\u226515<\/td>\n\u226560<\/td>\n\u226565<\/td>\n\u226565<\/td>\n\u22649<\/td>\n<\/tr>\n
          2500D<\/strong><\/td>\n2,780<\/td>\n3,600<\/td>\n\u226570<\/td>\n\u226515<\/td>\n\u226560<\/td>\n\u226565<\/td>\n\u226565<\/td>\n\u22649<\/td>\n<\/tr>\n
          3000D<\/strong><\/td>\n3,330<\/td>\n3,000<\/td>\n\u2265100<\/td>\n\u226515<\/td>\n\u226560<\/td>\n\u226565<\/td>\n\u226565<\/td>\n\u22649<\/td>\n<\/tr>\n
          4500D<\/strong><\/td>\n5,000<\/td>\n2,000<\/td>\n\u2265150<\/td>\n\u226515<\/td>\n\u226555<\/td>\n\u226565<\/td>\n\u226565<\/td>\n\u22649<\/td>\n<\/tr>\n
          6000D<\/strong><\/td>\n6,670<\/td>\n1,500<\/td>\n\u2265200<\/td>\n\u226515<\/td>\n\u226550<\/td>\n\u226555<\/td>\n\u226555<\/td>\n\u22649<\/td>\n<\/tr>\n
          9000D<\/strong><\/td>\n10,000<\/td>\n1,000<\/td>\n\u2265250<\/td>\n\u226515<\/td>\n\u226545<\/td>\n\u226555<\/td>\n\u226555<\/td>\n\u22649<\/td>\n<\/tr>\n
          18000D<\/strong><\/td>\n20,000<\/td>\n500<\/td>\n\u2265300<\/td>\n\u226515<\/td>\n\u226540<\/td>\n\u226550<\/td>\n\u226550<\/td>\n\u22649<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          All grades meet the Chinese industry standard YD\/T 1115.2-2001<\/strong>.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
          Parametre<\/th>\nTipik De\u011fer<\/th>\nTest Ko\u015fulu \/ Standard\u0131<\/th>\n<\/tr>\n<\/thead>\n
          Water Absorption Capacity<\/td>\nUp to 340 ml\/g<\/td>\n1-3 dakika i\u00e7inde<\/td>\n<\/tr>\n
          \u015ei\u015fme H\u0131z\u0131<\/td>\nRapid<\/td>\nSuyla temas etti\u011finde<\/td>\n<\/tr>\n
          \u00c7ekme Mukavemeti<\/td>\nHigh (filament base)<\/td>\nDuring stranding process<\/td>\n<\/tr>\n
          Uzama<\/td>\nHarika<\/td>\nMaintains flexibility<\/td>\n<\/tr>\n
          \u00c7al\u0131\u015fma S\u0131cakl\u0131\u011f\u0131 (K\u0131sa S\u00fcreli)<\/td>\n230\u00b0C'ye kadar<\/td>\n\u0130\u015fleme kararl\u0131l\u0131\u011f\u0131<\/td>\n<\/tr>\n
          \u00c7al\u0131\u015fma S\u0131cakl\u0131\u011f\u0131 (Uzun S\u00fcreli)<\/td>\n90\u00b0C'ye kadar<\/td>\nHizmet \u00f6mr\u00fc<\/td>\n<\/tr>\n
          Uyumluluk<\/td>\nYD\/T 1115.2-2001<\/td>\nIndustry standard<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          (Custom filament types, SAP loading, and yarn diameters available to match exact cable designs.)<\/p>\n

          \"Water<\/p>\n

          Water Blocking Yarn vs. Water Blocking Tape vs. Water Blocking Powder<\/h4>\n\n\n\n\n\n\n\n\n\n\n
          \u00d6zellik<\/th>\nWater Blocking Yarn<\/th>\nSu Ge\u00e7irmez Bant<\/th>\nSu Ge\u00e7irmez Toz<\/th>\nBest For Yarn<\/th>\n<\/tr>\n<\/thead>\n
          Uygulama Y\u00f6ntemi<\/td>\nStranding \/ binding (integrated)<\/td>\nLongitudinal \/ helical wrapping<\/td>\nBlown into interstices<\/td>\nY\u00fcksek h\u0131zl\u0131 otomatik hatlar<\/td>\n<\/tr>\n
          \u015ei\u015fme H\u0131z\u0131<\/td>\nVery fast (gel in 1\u20133 min)<\/td>\nH\u0131zl\u0131<\/td>\nInstant<\/td>\nRapid, reliable blocking<\/td>\n<\/tr>\n
          Mekanik Mukavemet<\/td>\nY\u00fcksek \u00e7ekme dayan\u0131m\u0131 ve uzama<\/td>\nIl\u0131man<\/td>\nHi\u00e7biri<\/td>\nNeeds structural reinforcement<\/td>\n<\/tr>\n
          Cleanliness & Splicing<\/td>\nVery clean, easy cut & splice<\/td>\nTemiz<\/td>\nPotential dust\/residue<\/td>\nFast field installation<\/td>\n<\/tr>\n
          Weight & Cable Diameter<\/td>\nMinimal impact<\/td>\nSlight increase<\/td>\nVery low<\/td>\nLightweight designs<\/td>\n<\/tr>\n
          Tipik Kullan\u0131m<\/td>\nFiber optic, power, telecom<\/td>\nOptical & power cables<\/td>\nSome conductor stranding<\/td>\nVersatile longitudinal protection<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          This comparison highlights why many manufacturers prefer Water Blocking Yarn for its balance of performance, cleanliness, and ease of integration.<\/p>\n

          \"Water<\/p>\n

          \u00dcretim Standartlar\u0131 ve Kalite G\u00fcvencesi<\/h3>\n

          Water Blocking Yarn complies with YD\/T 1115.2-2001<\/strong> and is widely tested to IEC and GR-20 equivalents for water penetration, ensuring consistent swelling performance, mechanical properties, and long-term gel stability. Every batch undergoes rigorous testing for absorption capacity, tensile strength, thermal stability, and environmental compliance.<\/p>\n

          Ambalaj ve Lojistik<\/h3>\n

          Supplied in convenient rolls with inner diameters of 38 mm, 76 mm, or 94 mm and maximum outer diameter of 270 mm. Maximum loading capacity: 5.5\u20136.5 MT per 20-foot container. Robust packaging protects the yarn during sea freight and storage.<\/p>\n

          Clean, Reliable Longitudinal Water Protection for Modern Cable Designs<\/h3>\n

          Water Blocking Yarn (Water Swellable Yarn) combines high mechanical strength with rapid, high-capacity swelling to deliver a clean, efficient, and cost-effective longitudinal water-blocking solution. Its versatility across multiple precision grades (700D\u201318,000D), excellent processability, and proven performance in optical fiber, telecom, control, and power cables make it indispensable for manufacturers producing reliable cables for wet or demanding environments.<\/p>\n

          For cable manufacturers and EPC contractors seeking reliable quality, customized technical solutions, and long-term partnership value, this material ensures your cables pass stringent water penetration tests while optimizing production efficiency and field performance.<\/p>\n

          \u015eimdi bilgi isteyin<\/strong> to request detailed technical data sheets, samples, custom specifications (including high-swell, heavy-denier, or submarine grades), or competitive bulk quotations tailored to your cable designs and stranding lines. Our expert team provides full technical consultation and one-stop material solutions that strengthen your competitive advantage in global cable markets.<\/p>","protected":false},"excerpt":{"rendered":"

          Su Engelleme \u0130pli\u011fi, Su \u015ei\u015fen \u0130plik olarak da bilinir, modern kablo \u00fcretiminde yayg\u0131n olarak kullan\u0131lan y\u00fcksek performansl\u0131 bir su engelleme malzemesidir. Y\u00fcksek mukavemetli end\u00fcstriyel polyester (veya naylon) filamentleri s\u00fcper emici polimerler (SAP) ve \u00f6zel yap\u0131\u015ft\u0131r\u0131c\u0131larla birle\u015ftirir. Suya maruz kald\u0131\u011f\u0131nda, iplik nemi h\u0131zla emer ve kablo aral\u0131klar\u0131n\u0131 etkili bir \u015fekilde kapatan, kablo \u00e7ekirde\u011fi boyunca boyuna su n\u00fcfuzunu \u00f6nleyen yo\u011fun bir jel olu\u015fturmak \u00fczere geni\u015fler.<\/p>","protected":false},"featured_media":29462,"comment_status":"open","ping_status":"closed","template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[21,93,91],"product_tag":[235,242,243],"class_list":{"0":"post-28583","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-all-product","7":"product_cat-auxiliary-material-for-cable","8":"product_cat-cable-material","9":"product_tag-power-cable-water-blocking","10":"product_tag-water-blocking-yarn","11":"product_tag-water-swellable-yarn","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/product\/28583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/comments?post=28583"}],"version-history":[{"count":7,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/product\/28583\/revisions"}],"predecessor-version":[{"id":30686,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/product\/28583\/revisions\/30686"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/media\/29462"}],"wp:attachment":[{"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/media?parent=28583"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/product_brand?post=28583"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/product_cat?post=28583"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/doingcable.com\/tr\/wp-json\/wp\/v2\/product_tag?post=28583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}