KOSOO K-2 Environment friendly, flexible, flame-retardant polyolefin tubing nApplication KOSOO K-2 is environment friendly, flexible, flame-retardant,
irradiated crosslinking heat-shrinkable modified polyolefin tubing.
Unlike other typical flame-retarant tubings, K-2 is free of PCBs,
PCPs, polybrominated biphenyls (PBBs), polybrominated biphenyl
oxides and ethers (PBBOs, PBBEs and PBDEs) and toxic heavy metal
compounds, which are classified as environmentally hazardous
substances. This high-reliability product is widely used for insulation or
jacketing of wire harness, strain relief of wire terminations and
connections, bundling of wire harness, protection of soldered
points, insulation and capsule of electronic components,
anti-corrosive protection, identification and color coding, etc. nFeatures/Benefits Shrink ratio: 2:1. Very flexible, highly flame-retardant. Low shrink temperature. Good thermal stability. Excellent physical, chemical and electrical properties. Free of PCBs, PCPs, polybrominated biphenyls (PBBs), polybrominated
biphenyl oxides and ethers (PBBOs, PBBEs and PBDEs) and toxic heavy
metal compounds, which are classified as environmentally hazardous
substances. Conform to European RoHS environmental directive. Wide range of sizes and colors. Operating Temperature Range Operating temperature range: -55℃~135℃ Minimum shrink temperature: 70℃ Minimum full recovery temperature: 110℃ Standards/Approvals UL224 E214175 125℃ 600V VW-1 CSA C22.2 210475 125℃ 600V VW-1 AMS-DTL-23053/5 class 1 and class 3 nSpecification values | Property | Requirement | Test method | Typical data | Physical： | Concentricity | 70% min. | ASTM D 2671 | ≥70% | | Tensile strength | 10.4MPa min. | ASTM D 638 | ≥14.0MPa | | Elongation | 200% min. | ASTM D 638 | ≥400% | | Heat shock 250℃, 4hrs | No cracking, dripping or flowing | ASTM D 2671 | Pass | | Low temperature flexibility -55℃, 4hrs | No cracking | ASTM D 2671 | Pass | Aging 175℃,168hrs | | | | Tensile strength after aging | 70% of original min. | ASTM D 638 | ≥90% | Elongation after aging | 100% min. | ASTM D 638 | ≥300% | Electrical： | Dielectric voltage withstand | 2500V, 60sec no breakdown | UL224 | Pass | Dielectric strength | 19.7KV/mm min. | ASTM D 2671 | 25KV/mm | Volume resistivity | 1014cm min. | ASTM D 876 | ≥1014cm | Chemical： | Corrosion | No corrosion | ASTM D 2671 | Pass | | Flammability | VW-1 | UL224 | Pass |
Product sizes Inch sizemm/inch Size | Inside diameter | Wall thickness | Standard length (m/spool) | As supplied(min.) | After recovery(max.) | After recovery | 3/64 | 1.2（0.046） | 0.6（0.023） | 0.40±0.08（0.016±0.003） | 200 | 1/16 | 1.6（0.063） | 0.8（0.031） | 0.43±0.08（0.017±0.003） | 200 | 3/32 |
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