| Application: | Insulators |
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| Type: | Insulation Sleeve |
| 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 
Introducing our high-quality wire and cable markers, made of irradiation cross-linked special fluoropolymer. These markers are designed to meet the needs of applications requiring high-temperature and abrasion resistance. With outstanding chemical and solvent resistance, they provide reliable protection for electronic components while allowing for easy identification and inspection.
Our wire and cable markers are also ideal for providing insulation and strain relief for electrical connections and wire terminations. They are perfect for identifying wires and packaging components, ensuring efficient organization and management.
Experience the exceptional quality and performance of our wire and cable markers. Trust Shanghai Wellco International Limited for all your electrical and electronic component protection needs.
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Property
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Requirement
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Test method
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Typical data
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Longitudinal shrinkage
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≤10%
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ASTM D 2671
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≤5%
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Tensile strength
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≥24.5 MPa
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ASTM D 2671
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≥35 MPa
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Elongation at break
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≥150%
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ASTM D 2671
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≥300%
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Elongation after ageing
(225ºC,168hrs)
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≥100%
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ASTM D 2671
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≥ 200%
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Heat shock(275ºC,4hrs)
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No crack
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ASTM D 2671
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No crack
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Low-temperature
flexibility(-55ºC,4hrs)
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No crack
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ASTM D 2671
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No crack
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Dielectric voltage
withstand
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2500V,60sec, no
breakdown
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ASTM D 2671
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No breakdown
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Volume resistivity
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1013Ω·cm min.
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ASTM D 876
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≥1013Ω·cm
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Corrosion
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No corrosion
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ASTM D 2671
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No corrosion
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Flammability
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VW-1
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UL224
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pass
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Size
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As supplied(mm)
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After recovered (mm)
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Inch
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mm
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diameter(Min)
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diameter(max.)
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3/32
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Φ2.4
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2.4
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1.2
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1/8
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Φ3.2
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3.2
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1.6
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3/16
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Φ4.8
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4.8
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2.4
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1/4
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Φ6.4
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6.4
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3.2
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3/8
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Φ9.5
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9.5
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4.8
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1/2
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Φ12.7
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12.7
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6.4
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3/4
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Φ19.1
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19.1
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9.5
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1
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Φ25.4
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25.4
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12.7
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1 1/2
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Φ38.1
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38.1
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19.1
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2
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Φ50.8
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50.8
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25.4
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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 standards.
We are 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, ensuring the stability and reliability of 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.
We are based in Shanghai, China, and have been in operation since 2017. Our products are sold 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%), Mid East (5.00%), Northern Europe (5.00%), Eastern Asia (3.00%), Domestic Market (3.00%), Southern Europe (2.00%), Africa (00.00%), and Central America (00.00%). Our team consists of 5-10 dedicated professionals.
We prioritize quality and ensure it through various measures:
At Shanghai Wellco International Limited, we offer a wide range of products, including:
When it comes to purchasing insulation materials, there are several reasons why you should choose us:
We offer the following services:
Suppliers with verified business licenses
Audited Supplier 
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