| Application: | Insulators, Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical Base, Shell, Motor, Insulating Varnish, Switch Baseplate |
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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 The W-DW dual-wall adhesive-lined heat shrinkable tubing, manufactured by Shanghai Wellco International Limited, is a high-quality solution designed for environmental sealing and electrical insulation in the automotive and commercial industries. This tubing is made from a cross-linked modified polyolefin outer layer and a flame-retarded modified hot melt adhesive inner layer, providing excellent mechanical, electric, and chemical performance.
The W-DW dual-wall adhesive-lined heat shrinkable tubing is ideal for use in the automotive industry and commercial industry. It is specifically designed for wire splices, terminations, and components, offering reliable sealing insulation protection. The outer polyolefin layer provides additional strain relief and abrasion protection for wire connectors and components.
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Item
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Test Method
|
Indicator
|
|
Longitudinal length change rate
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UL224
|
-10%~0
|
|
Tensile Strength
|
ASTM D2671
|
≥10.4MPa
|
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Breaking Elongation
|
ASTM D2671
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≥200%
|
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Aging Test Of Hot Air
|
158.0ºC±1.0ºC/168h
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-
|
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Tensile Strength After Aging
|
ASTM D2671
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≥7.3MPa
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Elongation At Break After Aging
|
ASTM D2671
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≥100%
|
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Volume Resistivity
|
ASTM D876
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≥1.0x1013Ω· cm
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Withstanding Voltage
|
ASTM D2671
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2500V,60s,Without breakdown
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Water Absorption
|
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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||
|
(max.)ID
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Wall thickness
|
Adhesive thickness
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|||
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3:1
|
|||||
|
3.2
|
3.2
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1.00
|
0.85
|
0.35
|
1.22
|
|
4.7
|
4.7
|
1.50
|
1.05
|
0.45
|
1.22
|
|
6.4
|
6.4
|
2.00
|
1.10
|
0.45
|
1.22
|
|
9.5
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9.5
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3.00
|
1.45
|
0.45
|
1.22
|
|
12.7
|
12.7
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4.00
|
1.50
|
0.45
|
1.22
|
|
19.1
|
19.1
|
6.00
|
2.00
|
0.65
|
1.22
|
|
25.4
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25.4
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8.40
|
2.00
|
0.65
|
1.22
|
|
30
|
30
|
10.0
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2.20
|
0.75
|
1.22
|
|
40
|
40
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13.3
|
2.50
|
1.00
|
1.22
|
|
4:1
|
|||||
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4
|
4
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1.00
|
1.00
|
0.50
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1.22
|
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8
|
8
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2.00
|
1.10
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0.50
|
1.22
|
|
12
|
12
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3.00
|
1.40
|
0.61
|
1.22
|
|
16
|
16
|
4.00
|
1.78
|
0.76
|
1.22
|
|
24
|
24
|
6.00
|
2.25
|
0.76
|
1.22
|
|
32
|
32
|
8.00
|
2.54
|
1.02
|
1.22
|
Shanghai Wellco International Limited is a professional team with 18 years of experience in R&D, production, and sales of special heat shrink tubes and other radiation crosslinking materials. We specialize in 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.
With a strong technical force and advanced production equipment, we offer heat shrink tubes and insulation tubes made from various materials such as modified PE, PVDF, FEP, EPDM, Silicone, FKM, FEP, PTFE, and more. Our 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 passed UL certification, RoHS, and REACH.
We are also capable of producing customized products or developing products with special requirements based on customer needs. Our production adheres to ISO9001 and IATF16949 quality management system standards to ensure the stability and reliability of product quality.
Shanghai Wellco International Limited is a professional manufacturer based in Shanghai, China. Since 2017, we have been dedicated to providing high-quality heat shrink tubes, heat shrink mould parts, marking sleeves, and cold shrink tubes to customers worldwide.
With a team of 5-10 people, we are committed to delivering exceptional products and services to meet your insulation needs.
We prioritize quality and ensure that every product meets our high standards. Before mass production, we always provide a pre-production sample for your approval. Additionally, a final inspection is conducted before shipment to guarantee the quality of our products.
At Shanghai Wellco International Limited, we offer a wide range of products, including:
Our products are designed to provide efficient and reliable insulation solutions for various applications.
There are several reasons why you should choose Shanghai Wellco International Limited as your supplier:
We are committed to providing excellent services to our customers. Our accepted delivery terms include FOB, CFR, CIF, EXW, CIP, FCA, DDP, DDU, and Express Delivery. We accept payment in USD, EUR, and CNY, and offer various payment options such as T/T, L/C, MoneyGram, PayPal, and Western Union.
Choose Shanghai Wellco International Limited for reliable products, exceptional quality, and outstanding customer service.
Suppliers with verified business licenses
Audited Supplier 
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