{"id":28591,"date":"2026-04-26T07:13:13","date_gmt":"2026-04-26T07:13:13","guid":{"rendered":"https:\/\/doingcable.com\/?post_type=product&#038;p=28591"},"modified":"2026-08-01T07:57:34","modified_gmt":"2026-08-01T07:57:34","slug":"water-blocking-tape-water-swellable-tape","status":"publish","type":"product","link":"https:\/\/doingcable.com\/ar\/product\/water-blocking-tape-water-swellable-tape\/","title":{"rendered":"\u0634\u0631\u064a\u0637 \u0645\u0627\u0646\u0639 \u0644\u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u064a\u0627\u0647 \/ \u0634\u0631\u064a\u0637 \u0645\u0646\u062a\u0641\u062e \u0628\u0627\u0644\u0645\u0627\u0621"},"content":{"rendered":"<p dir=\"auto\"><strong>\u0634\u0631\u064a\u0637 \u0645\u0627\u0646\u0639 \u0644\u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u064a\u0627\u0647 \/ \u0634\u0631\u064a\u0637 \u0645\u0646\u062a\u0641\u062e \u0628\u0627\u0644\u0645\u0627\u0621<\/strong> is a non-woven polyester fabric impregnated with superabsorbent polymer (SAP, primarily sodium polyacrylate) that provides rapid longitudinal water blocking in power, control, and optical cables. Upon water contact it absorbs moisture and expands into a stable gel within 1\u20133 minutes, sealing interstices and limiting longitudinal migration typically to less than 1 m under standard hydrostatic test conditions.<\/p>\n<p dir=\"auto\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-30189\" src=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables.png\" alt=\"Reliable Water Blocking Tape for Cables\" width=\"774\" height=\"581\" srcset=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables.png 2048w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables-400x300.png 400w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables-1067x800.png 1067w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables-768x576.png 768w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables-1536x1152.png 1536w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables-16x12.png 16w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables-430x323.png 430w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables-700x525.png 700w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Reliable-Water-Blocking-Tape-for-Cables-250x188.png 250w\" sizes=\"(max-width: 774px) 100vw, 774px\" \/><\/p>\n<h3 dir=\"auto\">How Water Blocking \/ Swellable Tape Functions in Cable Construction<\/h3>\n<p dir=\"auto\">The tape is applied longitudinally or helically over the insulation screen, under the metallic screen\/sheath, or over armour wires. When water enters through a jacket breach, joint, or sheath defect, SAP particles absorb liquid by osmosis and hydrogen bonding. Volume expansion fills voids between conductors, screens and sheath, forming a high-viscosity gel barrier that resists further axial flow.<\/p>\n<p dir=\"auto\">Typical laboratory performance (GB\/T and manufacturer data aligned with IEC 60502 water-penetration principles):<\/p>\n<ul dir=\"auto\">\n<li>Swelling height: \u226512\u201318 mm within 1\u20133 min (single-side vs double-side grades)<\/li>\n<li>Swelling speed: \u22656\u201312 mm in the first minute<\/li>\n<li>Tensile strength: \u226525\u201350 N\/cm<\/li>\n<li>Elongation: \u22658\u201314 %<\/li>\n<li>Short-term thermal stability: 230 \u00b0C (processing \/ extrusion)<\/li>\n<li>Long-term operating temperature: 90 \u00b0C<\/li>\n<li>Moisture content: \u22649 %<\/li>\n<\/ul>\n<p dir=\"auto\">Semi-conductive grades incorporate carbon black for controlled volume resistivity (typically \u22640.05\u20130.1 M\u03a9\u00b7cm surface), ensuring electrical continuity between insulation screen and metallic sheath. Non-conductive grades are used over screens or armour where insulation integrity is required.<\/p>\n<p dir=\"auto\"><img decoding=\"async\" class=\"alignnone  wp-image-28749\" src=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/54898cd09c2362a8e16f284d361a624.png\" alt=\"water blocking tape for cable\" width=\"771\" height=\"514\" srcset=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/54898cd09c2362a8e16f284d361a624.png 900w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/54898cd09c2362a8e16f284d361a624-430x287.png 430w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/54898cd09c2362a8e16f284d361a624-250x167.png 250w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/54898cd09c2362a8e16f284d361a624-700x467.png 700w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/54898cd09c2362a8e16f284d361a624-400x267.png 400w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/54898cd09c2362a8e16f284d361a624-768x512.png 768w\" sizes=\"(max-width: 771px) 100vw, 771px\" \/><\/p>\n<h3 dir=\"auto\">\u0627\u0644\u0645\u0632\u0627\u064a\u0627 \u0627\u0644\u062a\u0642\u0646\u064a\u0629 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0648\u0641\u0648\u0627\u0626\u062f \u0627\u0644\u0623\u062f\u0627\u0621<\/h3>\n<p dir=\"auto\"><strong>Rapid &amp; High-Efficiency Swelling<\/strong> Achieves fast swelling kinetics with high gel strength, blocking water migration almost instantly \u2014 critical for passing stringent water penetration tests in fiber optic and power cables.<\/p>\n<p dir=\"auto\"><strong>Process-Friendly Mechanical Properties<\/strong><\/p>\n<ul dir=\"auto\">\n<li>Tensile strength: \u226525\u201350 N\/cm (higher in reinforced grades)<\/li>\n<li>Elongation: \u22658\u201314%<\/li>\n<li>Low weight and thin profile (typically 0.1\u20130.3 mm)<\/li>\n<\/ul>\n<p dir=\"auto\">These properties ensure smooth longitudinal or helical application without tearing, wrinkling, or dust generation on high-speed lines.<\/p>\n<p dir=\"auto\"><strong>Versatile Configurations for Every Cable Design<\/strong> Available in:<\/p>\n<ul dir=\"auto\">\n<li><strong>Single-side<\/strong> \u0648 <strong>double-side<\/strong> versions<\/li>\n<li><strong>Non-conductive<\/strong> (standard for fiber optic and telecom cables)<\/li>\n<li><strong>Semi-conductive<\/strong> (essential for MV\/HV power cables to maintain electrical continuity across metallic screens)<\/li>\n<\/ul>\n<p dir=\"auto\"><strong>Excellent Environmental &amp; Thermal Stability<\/strong><\/p>\n<ul dir=\"auto\">\n<li>Short-term stability: Up to 230\u00b0C (during extrusion and processing)<\/li>\n<li>Long-term operating temperature: Up to 90\u00b0C<\/li>\n<li>Low moisture content and full REACH &amp; RoHS compliance<\/li>\n<\/ul>\n<p dir=\"auto\">Flame-retardant and reinforced grades are also available for specialty applications.<\/p>\n<p dir=\"auto\"><strong>Long-Term Gel Integrity<\/strong> The formed gel remains stable over the cable\u2019s service life, preventing water treeing, conductor corrosion, and dielectric degradation \u2014 significantly extending cable reliability in underground, submarine, and outdoor installations.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-28750\" src=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/66b8c8dbc1ab2108c9606924f4f654b.png\" alt=\"How to Join EPDM Rubber Pond Liner\" width=\"805\" height=\"427\" srcset=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/66b8c8dbc1ab2108c9606924f4f654b.png 1100w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/66b8c8dbc1ab2108c9606924f4f654b-430x228.png 430w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/66b8c8dbc1ab2108c9606924f4f654b-250x133.png 250w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/66b8c8dbc1ab2108c9606924f4f654b-700x372.png 700w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/66b8c8dbc1ab2108c9606924f4f654b-400x212.png 400w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/66b8c8dbc1ab2108c9606924f4f654b-768x408.png 768w\" sizes=\"(max-width: 805px) 100vw, 805px\" \/><\/p>\n<h3 dir=\"auto\">\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629 \u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a<\/h3>\n<p dir=\"auto\">Water Blocking Tape is widely specified as the longitudinal water-blocking layer between the cable core and outer sheath in:<\/p>\n<ul dir=\"auto\">\n<li><strong>Optical Fiber Cables<\/strong> (loose tube, ribbon, micro-cable, and submarine designs)<\/li>\n<li><strong>Telecommunication &amp; Data Transmission Cables<\/strong><\/li>\n<li><strong>\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0648\u0627\u0644\u0623\u062c\u0647\u0632\u0629<\/strong><\/li>\n<li><strong>\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u0637\u0627\u0642\u0629 \u0645\u062a\u0648\u0633\u0637\u0629 \u0648\u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0647\u062f<\/strong> (MV\/HV)<\/li>\n<li><strong>Underground, Direct-Buried, Submarine, and Outdoor Cables<\/strong> exposed to moisture risk<\/li>\n<\/ul>\n<p dir=\"auto\">It is particularly effective in combination with other barriers (such as copolymer coated tapes or metallic sheaths) for comprehensive radial and longitudinal protection.<\/p>\n<p dir=\"auto\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30933\" src=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Water-Blocking-Tape-Water-Swellable-Tape-doingcable.avif\" alt=\"Water Blocking Tape Water Swellable Tape-doingcable\" width=\"638\" height=\"512\" srcset=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Water-Blocking-Tape-Water-Swellable-Tape-doingcable.avif 638w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Water-Blocking-Tape-Water-Swellable-Tape-doingcable-374x300.avif 374w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Water-Blocking-Tape-Water-Swellable-Tape-doingcable-15x12.avif 15w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Water-Blocking-Tape-Water-Swellable-Tape-doingcable-430x345.avif 430w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Water-Blocking-Tape-Water-Swellable-Tape-doingcable-250x201.avif 250w\" sizes=\"(max-width: 638px) 100vw, 638px\" \/><\/p>\n<h4 dir=\"auto\">Water Blocking Tape vs. Water Blocking Powder &amp; Swellable Yarn \u2013 Quick Comparison<\/h4>\n<table>\n<thead>\n<tr>\n<th data-col-size=\"md\">\u0645\u064a\u0632\u0629<\/th>\n<th data-col-size=\"lg\">Water Blocking Tape<\/th>\n<th data-col-size=\"md\">\u0645\u0633\u062d\u0648\u0642 \u0645\u0627\u0646\u0639 \u0644\u0644\u0645\u064a\u0627\u0647 (SAP)<\/th>\n<th data-col-size=\"sm\">Swellable Yarn<\/th>\n<th data-col-size=\"lg\">\u0627\u0644\u0623\u0641\u0636\u0644 \u0644\u0640<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-col-size=\"md\"><strong>Application Method<\/strong><\/td>\n<td data-col-size=\"lg\">Longitudinal\/helical wrapping<\/td>\n<td data-col-size=\"md\">Direct addition during stranding<\/td>\n<td data-col-size=\"sm\">Integrated into core or binder<\/td>\n<td data-col-size=\"lg\">Tape for uniform coverage<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"md\"><strong>Swelling Speed<\/strong><\/td>\n<td data-col-size=\"lg\">Very fast (\u226512\u201318 mm\/3 min)<\/td>\n<td data-col-size=\"md\">Instant gel formation<\/td>\n<td data-col-size=\"sm\">\u0645\u0639\u062a\u062f\u0644<\/td>\n<td data-col-size=\"lg\">High-speed automated lines<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"md\"><strong>Mechanical Strength<\/strong><\/td>\n<td data-col-size=\"lg\">High tensile &amp; elongation<\/td>\n<td data-col-size=\"md\">None (powder only)<\/td>\n<td data-col-size=\"sm\">Good (yarn reinforcement)<\/td>\n<td data-col-size=\"lg\">Structural integrity needed<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"md\"><strong>Conductivity Options<\/strong><\/td>\n<td data-col-size=\"lg\">Semi-conductive &amp; non-conductive<\/td>\n<td data-col-size=\"md\">Non-conductive only<\/td>\n<td data-col-size=\"sm\">\u0645\u062d\u062f\u0648\u062f<\/td>\n<td data-col-size=\"lg\">Power cables (semi-conductive)<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"md\"><strong>Cleanliness &amp; Dust<\/strong><\/td>\n<td data-col-size=\"lg\">Very clean<\/td>\n<td data-col-size=\"md\">Potential dust during handling<\/td>\n<td data-col-size=\"sm\">\u0646\u0638\u064a\u0641<\/td>\n<td data-col-size=\"lg\">Modern high-speed production<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"md\"><strong>Typical Use<\/strong><\/td>\n<td data-col-size=\"lg\">Fiber optic, telecom, MV\/HV power<\/td>\n<td data-col-size=\"md\">Conductor stranding<\/td>\n<td data-col-size=\"sm\">Lightweight fiber optic cores<\/td>\n<td data-col-size=\"lg\">Versatile longitudinal blocking<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p dir=\"auto\">This comparison shows why many manufacturers prefer Water Blocking Tape for its balance of performance, ease of use, and reliability in complex cable constructions.<\/p>\n<p dir=\"auto\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-30935\" src=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable.webp\" alt=\"Tapes for power cable-doingcable\" width=\"1133\" height=\"615\" srcset=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable.webp 2000w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable-400x217.webp 400w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable-1300x706.webp 1300w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable-768x417.webp 768w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable-1536x834.webp 1536w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable-18x10.webp 18w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable-430x233.webp 430w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable-700x380.webp 700w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Tapes-for-power-cable-doingcable-250x136.webp 250w\" sizes=\"(max-width: 1133px) 100vw, 1133px\" \/><\/p>\n<h3 dir=\"auto\">\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629<\/h3>\n<h4>Semi-Conductive Water Blocking Tape (Single Side)<\/h4>\n<table>\n<thead>\n<tr>\n<th data-col-size=\"lg\">Thickness (mm)<\/th>\n<th data-col-size=\"lg\">Mass per Area (g\/m\u00b2)<\/th>\n<th data-col-size=\"sm\">Tensile Strength (N\/cm)<\/th>\n<th data-col-size=\"sm\">\u0627\u0644\u0627\u0633\u062a\u0637\u0627\u0644\u0629 (%)<\/th>\n<th data-col-size=\"sm\">Swelling Speed (mm\/1 min)<\/th>\n<th data-col-size=\"sm\">Swelling Height (mm\/3 min)<\/th>\n<th data-col-size=\"md\">Surface Resistance (\u03a9)<\/th>\n<th data-col-size=\"lg\">Volume Resistance (\u03a9\u00b7cm)<\/th>\n<th data-col-size=\"xs\">Moisture Content (%)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-col-size=\"lg\">0.25 \u00b1 0.03<\/td>\n<td data-col-size=\"lg\">90 \u00b1 5<\/td>\n<td data-col-size=\"sm\">\u226525<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u22656<\/td>\n<td data-col-size=\"sm\">\u22658<\/td>\n<td data-col-size=\"md\">\u22641500<\/td>\n<td data-col-size=\"lg\">&lt;1\u00d710\u2076<\/td>\n<td data-col-size=\"xs\">\u22649<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">0.30 \u00b1 0.03<\/td>\n<td data-col-size=\"lg\">100 \u00b1 5<\/td>\n<td data-col-size=\"sm\">\u226530<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u22658<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"md\">\u22641500<\/td>\n<td data-col-size=\"lg\">&lt;1\u00d710\u2076<\/td>\n<td data-col-size=\"xs\">\u22649<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">0.35 \u00b1 0.03<\/td>\n<td data-col-size=\"lg\">110 \u00b1 5<\/td>\n<td data-col-size=\"sm\">\u226535<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u226510<\/td>\n<td data-col-size=\"sm\">\u226514<\/td>\n<td data-col-size=\"md\">\u22641500<\/td>\n<td data-col-size=\"lg\">&lt;1\u00d710\u2076<\/td>\n<td data-col-size=\"xs\">\u22649<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">0.40 \u00b1 0.03<\/td>\n<td data-col-size=\"lg\">130 \u00b1 10<\/td>\n<td data-col-size=\"sm\">\u226540<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u226511<\/td>\n<td data-col-size=\"sm\">\u226515<\/td>\n<td data-col-size=\"md\">\u22641500<\/td>\n<td data-col-size=\"lg\">&lt;1\u00d710\u2076<\/td>\n<td data-col-size=\"xs\">\u22649<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">0.50 \u00b1 0.03<\/td>\n<td data-col-size=\"lg\">160 \u00b1 10<\/td>\n<td data-col-size=\"sm\">\u226550<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u226518<\/td>\n<td data-col-size=\"md\">\u22641500<\/td>\n<td data-col-size=\"lg\">&lt;1\u00d710\u2076<\/td>\n<td data-col-size=\"xs\">\u22649<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h4 dir=\"auto\">Non-Conductive Water Blocking Tape (Double Side Example)<\/h4>\n<table>\n<thead>\n<tr>\n<th data-col-size=\"lg\">Thickness (mm)<\/th>\n<th data-col-size=\"lg\">Mass per Area (g\/m\u00b2)<\/th>\n<th data-col-size=\"sm\">Tensile Strength (N\/cm)<\/th>\n<th data-col-size=\"sm\">\u0627\u0644\u0627\u0633\u062a\u0637\u0627\u0644\u0629 (%)<\/th>\n<th data-col-size=\"sm\">Swelling Speed (mm\/1 min)<\/th>\n<th data-col-size=\"sm\">Swelling Height (mm\/3 min)<\/th>\n<th data-col-size=\"xs\">Moisture Content (%)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-col-size=\"lg\">0.18 \u00b1 0.03<\/td>\n<td data-col-size=\"lg\">65 \u00b1 10<\/td>\n<td data-col-size=\"sm\">\u226525<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u22654<\/td>\n<td data-col-size=\"sm\">\u22656<\/td>\n<td data-col-size=\"xs\">\u22646<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">0.25 \u00b1 0.03<\/td>\n<td data-col-size=\"lg\">80 \u00b1 10<\/td>\n<td data-col-size=\"sm\">\u226530<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u22658<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"xs\">\u22646<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">0.30 \u00b1 0.03<\/td>\n<td data-col-size=\"lg\">90 \u00b1 10<\/td>\n<td data-col-size=\"sm\">\u226535<\/td>\n<td data-col-size=\"sm\">\u226512<\/td>\n<td data-col-size=\"sm\">\u226510<\/td>\n<td data-col-size=\"sm\">\u226514<\/td>\n<td data-col-size=\"xs\">\u22646<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p dir=\"auto\"><strong>\u0645\u0644\u062d\u0648\u0638\u0629<\/strong>: Full range of single-side and double-side, conductive and non-conductive grades available. Custom specifications upon request.<\/p>\n<table>\n<thead>\n<tr>\n<th data-col-size=\"lg\">\u0627\u0644\u0645\u0639\u0644\u0645\u0629<\/th>\n<th data-col-size=\"md\">Semi-Conductive (Single Side)<\/th>\n<th data-col-size=\"md\">Non-Conductive (Double Side)<\/th>\n<th data-col-size=\"lg\">\u0634\u0631\u0648\u0637 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \/ \u0627\u0644\u0645\u0639\u064a\u0627\u0631<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-col-size=\"lg\">Swelling Height<\/td>\n<td data-col-size=\"md\">\u226512 mm<\/td>\n<td data-col-size=\"md\">\u226518 mm<\/td>\n<td data-col-size=\"lg\">Within 1\u20133 minutes<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">Swelling Speed<\/td>\n<td data-col-size=\"md\">Fast<\/td>\n<td data-col-size=\"md\">Very Fast<\/td>\n<td data-col-size=\"lg\">Upon water contact<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">\u0642\u0648\u0629 \u0627\u0644\u0634\u062f<\/td>\n<td data-col-size=\"md\">\u0639\u0627\u0644\u064a<\/td>\n<td data-col-size=\"md\">\u0639\u0627\u0644\u064a<\/td>\n<td data-col-size=\"lg\">During stranding<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">Operating Temperature (Short-term)<\/td>\n<td data-col-size=\"md\">Up to 230\u00b0C<\/td>\n<td data-col-size=\"md\">Up to 230\u00b0C<\/td>\n<td data-col-size=\"lg\">Processing stability<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">Operating Temperature (Long-term)<\/td>\n<td data-col-size=\"md\">Up to 90\u00b0C<\/td>\n<td data-col-size=\"md\">Up to 90\u00b0C<\/td>\n<td data-col-size=\"lg\">Service life<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">Moisture Content<\/td>\n<td data-col-size=\"md\">\u0645\u0646\u062e\u0641\u0636<\/td>\n<td data-col-size=\"md\">\u0645\u0646\u062e\u0641\u0636<\/td>\n<td data-col-size=\"lg\">Pre-production<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"lg\">Compliance<\/td>\n<td data-col-size=\"md\">REACH &amp; RoHS<\/td>\n<td data-col-size=\"md\">REACH &amp; RoHS<\/td>\n<td data-col-size=\"lg\">Environmental standards<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p dir=\"auto\">(Custom single-side \/ double-side, conductive \/ non-conductive grades available to match exact cable designs.)<\/p>\n<p dir=\"auto\">\n<p dir=\"auto\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30934\" src=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Conductive-vs-Non-Conductive-Grades-doingcable.jpg\" alt=\"Conductive vs Non-Conductive Grades-doingcable\" width=\"1024\" height=\"559\" srcset=\"https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Conductive-vs-Non-Conductive-Grades-doingcable.jpg 1024w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Conductive-vs-Non-Conductive-Grades-doingcable-400x218.jpg 400w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Conductive-vs-Non-Conductive-Grades-doingcable-768x419.jpg 768w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Conductive-vs-Non-Conductive-Grades-doingcable-18x10.jpg 18w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Conductive-vs-Non-Conductive-Grades-doingcable-430x235.jpg 430w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Conductive-vs-Non-Conductive-Grades-doingcable-700x382.jpg 700w, https:\/\/doingcable.com\/wp-content\/uploads\/2026\/04\/Conductive-vs-Non-Conductive-Grades-doingcable-250x136.jpg 250w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h3 dir=\"auto\">Key Technical Parameters Summary<\/h3>\n<table>\n<thead>\n<tr>\n<th data-col-size=\"xl\">Grade Type<\/th>\n<th data-col-size=\"lg\">Thickness (mm)<\/th>\n<th data-col-size=\"md\">Mass (g\/m\u00b2)<\/th>\n<th data-col-size=\"sm\">Swelling Speed (mm\/1 min)<\/th>\n<th data-col-size=\"md\">Swelling Height (mm\/3 min)<\/th>\n<th data-col-size=\"md\">Tensile (N\/cm)<\/th>\n<th data-col-size=\"xs\">Short-term Stability (\u00b0C)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td data-col-size=\"xl\">Non-cond. thin<\/td>\n<td data-col-size=\"lg\">0.20 \u00b1 0.03<\/td>\n<td data-col-size=\"md\">70\u201380<\/td>\n<td data-col-size=\"sm\">\u22656\u20139<\/td>\n<td data-col-size=\"md\">\u22659\u201312<\/td>\n<td data-col-size=\"md\">\u226525\u201335<\/td>\n<td data-col-size=\"xs\">230<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">Non-cond. standard<\/td>\n<td data-col-size=\"lg\">0.25\u20130.30<\/td>\n<td data-col-size=\"md\">85\u2013110<\/td>\n<td data-col-size=\"sm\">\u22658\u201312<\/td>\n<td data-col-size=\"md\">\u226512\u201316<\/td>\n<td data-col-size=\"md\">\u226535\u201350<\/td>\n<td data-col-size=\"xs\">230<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">Semi-cond. standard<\/td>\n<td data-col-size=\"lg\">0.30 \u00b1 0.02<\/td>\n<td data-col-size=\"md\">120\u2013125<\/td>\n<td data-col-size=\"sm\">\u22658\u201312<\/td>\n<td data-col-size=\"md\">\u226512\u201316<\/td>\n<td data-col-size=\"md\">\u226550\u201353<\/td>\n<td data-col-size=\"xs\">230<\/td>\n<\/tr>\n<tr>\n<td data-col-size=\"xl\">High-swell reinforced<\/td>\n<td data-col-size=\"lg\">0.40\u20130.50<\/td>\n<td data-col-size=\"md\">120\u2013140<\/td>\n<td data-col-size=\"sm\">\u226510\u201312<\/td>\n<td data-col-size=\"md\">\u226515\u201318<\/td>\n<td data-col-size=\"md\">\u226540<\/td>\n<td data-col-size=\"xs\">230\u2013250<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 dir=\"auto\">Standards, Testing and Recent Industry Requirements<\/h3>\n<p dir=\"auto\">IEC 60502 series defines water-penetration tests (longitudinal, with 1 m water head and thermal cycles). IEEE 3150-2025 (published August 2025) specifically addresses testing methods for semi-conductive water-blocking tape in 110\u2013500 kV XLPE AC cables, focusing on properties that prevent buffer-layer ablation failures. Chinese industry standard YD\/T 1115.1-2023 covers telecommunications and optical-fibre applications. REACH &amp; RoHS compliance is mandatory for global supply.<\/p>\n<p dir=\"auto\">Recent field experience (2020\u20132026) shows that incomplete drying or excessive moisture content in the tape before sheathing can lead to white powder precipitation (sodium polyacrylate + aluminium corrosion products). This raises volume resistivity, lowers relative permittivity and thermal conductivity, and can initiate partial discharge between the tape and aluminium sheath\u2014resulting in local ablation of the buffer layer. Proper moisture control (&lt;9 %), correct overlap, and verified swelling performance after heat ageing (90 \u00b0C, 12 months equivalent) are therefore critical process controls.<\/p>\n<h3 dir=\"auto\">Application Guidelines and Process Considerations<\/h3>\n<ul dir=\"auto\">\n<li><strong>Medium- and high-voltage XLPE power cables<\/strong>: Semi-conductive tape applied over insulation screen, under metallic sheath; optional second non-conductive layer over wire screen.<\/li>\n<li><strong>Submarine \/ wet-location cables<\/strong>: Double-side high-swell grades combined with radial moisture barriers (Al\/PE laminate).<\/li>\n<li><strong>Optical fibre and hybrid cables<\/strong>: Thin non-conductive tape or yarn for interstitial filling.<\/li>\n<li><strong>Processing<\/strong>: Tape must withstand CV-line temperatures up to 230 \u00b0C without powder loss or dimensional change. Widths are slit from 8 mm to &gt;500 mm; core diameters typically 76\u2013150 mm.<\/li>\n<\/ul>\n<p dir=\"auto\">Common failure modes to avoid:<\/p>\n<ol dir=\"auto\">\n<li>Insufficient swelling height after ageing \u2192 incomplete sealing under pressure.<\/li>\n<li>High residual moisture \u2192 premature gelation or powder migration.<\/li>\n<li>Incorrect conductivity grade \u2192 equipotential disruption or dielectric stress.<\/li>\n<li>Mechanical damage during high-speed application \u2192 gaps that allow water tracking.<\/li>\n<\/ol>\n<h3 dir=\"auto\">Practical Recommendations for Cable Manufacturers and Specifiers<\/h3>\n<p dir=\"auto\">Specify tape by measured swelling performance after thermal ageing rather than nominal thickness alone. Verify volume resistivity and surface conductivity for semi-conductive grades under the conditions defined in IEEE 3150-2025. Maintain low incoming moisture and control application tension to avoid wrinkles or gaps. For critical HV circuits, combine longitudinal swellable tape with a continuous radial metallic or laminated moisture barrier.<\/p>\n<p dir=\"auto\">Water Blocking \/ Swellable Tape remains the most process-compatible and cost-effective solution for reliable longitudinal water blocking in modern XLPE, EPR and optical cable constructions. Proper grade selection and process control directly extend service life and reduce repair costs caused by moisture-induced failures.<\/p>\n<p dir=\"auto\"><strong>\u0627\u0633\u062a\u0641\u0633\u0631 \u0627\u0644\u0622\u0646<\/strong> for detailed technical data sheets, custom slit widths, swelling test reports, or sample evaluation for your specific cable designs.<\/p>","protected":false},"excerpt":{"rendered":"<p dir=\"auto\">\u0634\u0631\u064a\u0637 \u0645\u0627\u0646\u0639 \u0644\u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u0627\u0621 \u0628\u062c\u0648\u062f\u0629 \u0627\u062d\u062a\u0631\u0627\u0641\u064a\u0629 (\u064a\u064f\u0639\u0631\u0641 \u0623\u064a\u0636\u0627\u064b \u0628\u0627\u0644\u0634\u0631\u064a\u0637 \u0627\u0644\u0642\u0627\u0628\u0644 \u0644\u0644\u0627\u0646\u062a\u0641\u0627\u062e \u0628\u0627\u0644\u0645\u0627\u0621) \u0645\u064f\u0635\u0646\u0651\u0639 \u0645\u0646 \u0642\u0645\u0627\u0634 \u063a\u064a\u0631 \u0645\u0646\u0633\u0648\u062c \u0645\u0646 \u0627\u0644\u0628\u0648\u0644\u064a\u0633\u062a\u0631 \u0639\u0627\u0644\u064a \u0627\u0644\u0642\u0648\u0629 \u0648\u0645\u064f\u0634\u0628\u0639 \u0628\u0648\u0644\u064a\u0645\u0631 \u0641\u0627\u0626\u0636 \u0627\u0644\u0627\u0645\u062a\u0635\u0627\u0635 (SAP). \u064a\u0646\u062a\u0641\u0627\u062e \u0628\u0633\u0631\u0639\u0629 \u0639\u0646\u062f \u0645\u0644\u0627\u0645\u0633\u0629 \u0627\u0644\u0645\u0627\u0621 \u0644\u064a\u0634\u0643\u0651\u0644 \u062d\u0627\u062c\u0632\u0627\u064b \u0647\u0644\u0627\u0645\u064a\u0627\u064b \u0643\u062b\u064a\u0641\u0627\u064b \u0648\u0645\u0633\u062a\u0642\u0631\u0627\u064b \u064a\u0645\u0646\u0639 \u062a\u0648\u063a\u0644 \u0627\u0644\u0645\u0627\u0621 \u0637\u0648\u0644\u064a\u0627\u064b \u0641\u064a \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u0623\u0628\u0635\u0627\u0631\u064a\u0629\u060c \u0648\"\u0643\u0627\u0628\u0644\u0627\u062a\" \u0627\u0644\u0637\u0627\u0642\u0629\u060c \u0648\u0627\u0644\u0627\u062a\u0635\u0627\u0644\u0627\u062a\u060c \u0648\u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u0643\u0645 \u0641\u064a\u0647\u0627. \u0645\u062a\u0648\u0641\u0631 \u0628\u062f\u0631\u062c\u0627\u062a \u063a\u064a\u0631 \u0645\u0648\u0635\u0644\u0629 \u0644\u0644\u0643\u0647\u0631\u0628\u0627\u0621 \u0648\u0634\u0628\u0647 \u0645\u0648\u0635\u0644\u0629\u060c \u0628\u062a\u0643\u0648\u064a\u0646\u0627\u062a \u0630\u0627\u062a \u0648\u062c\u0647 \u0648\u0627\u062d\u062f \u0623\u0648 \u0648\u062c\u0647\u064a\u0646. \u064a\u062a\u0645 \u062f\u0639\u0645 \u0627\u0644\u0639\u0631\u0648\u0636 \u0627\u0644\u0645\u062e\u0635\u0635\u0629\u060c \u0648\u0627\u0644\u0623\u0648\u0632\u0627\u0646 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629\u060c \u0648\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0623\u062f\u0627\u0621 \u0644\u062e\u0637\u0648\u0637 \u0625\u0646\u062a\u0627\u062c \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0633\u0631\u0639\u0629.<\/p>","protected":false},"featured_media":29455,"comment_status":"open","ping_status":"closed","template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[21,93,91],"product_tag":[199,234,235,233,231,232],"class_list":{"0":"post-28591","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-longitudinal-water-blocking","10":"product_tag-optical-fiber-cable-tape","11":"product_tag-power-cable-water-blocking","12":"product_tag-sap-cable-tape","13":"product_tag-water-blocking-tape","14":"product_tag-water-swellable-tape","16":"first","17":"instock","18":"shipping-taxable","19":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product\/28591","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/comments?post=28591"}],"version-history":[{"count":6,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product\/28591\/revisions"}],"predecessor-version":[{"id":30936,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product\/28591\/revisions\/30936"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/media\/29455"}],"wp:attachment":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/media?parent=28591"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product_brand?post=28591"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product_cat?post=28591"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/product_tag?post=28591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}