| Application: | Insulators |
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| Type: | Insulation Sleeve & Tube |
| Chemistry: | Organic Insulation |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier Material: Outer layer - Cross-linked modified polyolefin, Inner layer - Flame retarded modified hot melt adhesive
Shrink Ratio: 3:1, 4:1
Continuous Use Temperature: -40ºC~125ºC
Shrinkage Temperature: 100ºC~150ºC
Characteristics:
Application:
The W-DW dual-wall adhesive-lined heat shrinkable tubing, manufactured by Shanghai Wellco International Limited, is made by co-extrusion of an excellent semi-rigid polyolefin compound and special hot-melt adhesive. It is specially designed for environmental sealing and electrical insulation of wire splices, terminations, and components in the automotive and commercial industries. The outer polyolefin layer provides strain relief and abrasion protection for wire connectors and components, while the inner adhesive, with a wide range of operating temperatures, bonds to different kinds of automotive wires and cables, providing sealing insulation protection.
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Item
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Test Method
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Indicator
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Longitudinal length change rate
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UL224
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-10%~0
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Tensile Strength
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ASTM D2671
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≥10.4MPa
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Breaking Elongation
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ASTM D2671
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≥200%
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Aging Test Of Hot Air
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158.0ºC±1.0ºC/168h
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-
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Tensile Strength After Aging
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ASTM D2671
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≥7.3MPa
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Elongation At Break After Aging
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ASTM D2671
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≥100%
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Volume Resistivity
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ASTM D876
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≥1.0x1013Ω· cm
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Withstanding Voltage
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ASTM D2671
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2500V,60s,Without breakdown
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Water Absorption
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ASTM D570
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≤0.5%
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Thermal shock (applicable to outer layer only)
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-
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225ºC,4h,No breakage, no dripping
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Low-temperature resistance (applicable to outer layer only)
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ASTM D2671
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No breakage
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Solvent Resistance (diesel lubricating oil)
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-
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23ºC,24h,Excellent
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Size
(mm)
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As supply
(min.)ID (mm)
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After shrinked
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Package
(m/pc)
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||
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(max.)ID
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Wall thickness
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Adhesive thickness
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|||
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3:1
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|||||
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3.2
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3.2
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1.00
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0.85
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0.35
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1.22
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4.7
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4.7
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1.50
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1.05
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0.45
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1.22
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6.4
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6.4
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2.00
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1.10
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0.45
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1.22
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9.5
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9.5
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3.00
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1.45
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0.45
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1.22
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12.7
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12.7
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4.00
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1.50
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0.45
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1.22
|
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19.1
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19.1
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6.00
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2.00
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0.65
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1.22
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25.4
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25.4
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8.40
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2.00
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0.65
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1.22
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30
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30
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10.0
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2.20
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0.75
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1.22
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40
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40
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13.3
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2.50
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1.00
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1.22
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4:1
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|||||
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4
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4
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1.00
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1.00
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0.50
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1.22
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8
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8
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2.00
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1.10
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0.50
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1.22
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12
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12
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3.00
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1.40
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0.61
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1.22
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16
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16
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4.00
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1.78
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0.76
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1.22
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24
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24
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6.00
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2.25
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0.76
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1.22
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32
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32
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8.00
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2.54
|
1.02
|
1.22
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With 18 years of experience, Shanghai Wellco International Limited is a professional team specializing in the research and development, production, and sales of special heat shrink tubes and other radiation crosslinking materials. Our focus is on providing a wide range of products and solutions for insulation, connection, waterproofing, high temperature resistance, chemical resistance, EMI protection, and mechanical protection for wires and cables.
Our company boasts a strong technical force with 20 years of experience and advanced production equipment. We offer a variety of heat shrink tubes and insulation tubes made from materials such as modified PE, PVDF, FEP, EPDM, Silicone, FKM, FEP, and PTFE. These products find extensive applications in electronic communication, automobile, high-speed rail, electric motor, aviation, medical, and other industries. They provide insulation, water-proofing, electrostatic shielding, oil resistance, chemical resistance, and high-temperature protection. Our products have obtained UL certification, RoHS compliance, and REACH compliance.
We are also capable of producing customized products or developing products with special requirements based on customer needs. Our production processes adhere to the ISO9001 and IATF16949 quality management system standards, ensuring the stability and reliability of our product quality.
Shanghai Wellco International Limited is a professional manufacturer of special heat shrink tubes and other radiation crosslinking insulation materials. With over 20 years of experience in insulation, we are dedicated to providing high-quality products to our customers.
Our product range includes heat shrink tubes, heat shrink mould parts, marking sleeves, and cold shrink tubes. These products are designed to meet various insulation needs.
We guarantee the quality of our products through a rigorous process. Before mass production, we always provide a pre-production sample for approval. Additionally, a final inspection is conducted before shipment to ensure that our products meet the highest standards.
We serve customers worldwide, with a focus on North America (20.00%), South Asia (20.00%), Southeast Asia (15.00%), Western Europe (15.00%), South America (5.00%), Eastern Europe (5.00%), the Middle East (5.00%), Northern Europe (5.00%), Eastern Asia (3.00%), the Domestic Market (3.00%), Southern Europe (2.00%), Africa (00.00%), and Central America (00.00%).
We offer flexible delivery terms, including FOB, CFR, CIF, EXW, CIP, FCA, DDP, DDU, and Express Delivery. Accepted payment currencies are USD, EUR, and CNY, and we accept various payment types such as T/T, L/C, MoneyGram, PayPal, and Western Union. Our team is fluent in English, Chinese, and Japanese, ensuring smooth communication with our customers.
Suppliers with verified business licenses
Audited Supplier 
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