| After-sales Service: | on-Line Service |
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| Warranty: | 1 Year |
| Material: | PTFE |
| 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 
Shanghai Wellco International Limited presents the W-SPTFE 1.7:1 4:1 PTFE Heat Shrinkable Tubing, a high-performance solution designed to meet the insulation and mechanical protection needs in severe chemical and thermal environments.
Widely used in electronic, aerospace, military, and communication fields, the W-SPTFE 1.7:1 4:1 PTFE Heat Shrinkable Tubing is ideal for:
Experience the exceptional physical properties and chemical resistance of the W-SPTFE 1.7:1 4:1 PTFE Heat Shrinkable Tubing. Trust Shanghai Wellco International Limited for reliable and compliant solutions.
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Property
|
Requirement
|
Test method
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Typical data
|
|
Longitudinal shrinkage
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≤10%
|
ASTM D 2671
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≤5%
|
|
Tensile strength
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≥17.3 MPa
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ASTM D 2671
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≥ 22MPa
|
|
Elongation at break
|
≥200%
|
ASTM D 2671
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≥300%
|
|
Dielectric voltage withstand
|
2500V,60sec, no
breakdown
|
ASTM D 2671
|
pass
|
|
Volume resistivity
|
1015Ω·cm min.
|
ASTM D 876
|
1016Ω·cm
|
|
Corrosion
|
No corrosion
|
ASTM D 2671
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No corrosion
|
|
Flammability
|
VW-1
|
UL224
|
pass
|
|
Dielectric constant
|
|
|
2.1
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|
Friction coefficient
|
|
|
0.1
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Size
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ID as supplied
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ID After shrinked
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Wall after shrinked
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1.7:1
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|||
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φ0.5
|
0.7±0.2
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≤0.30
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0.15±0.05
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φ1.0
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1.0±0.2
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≤0.60
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0.15±0.05
|
|
φ1.5
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1.5±0.2
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≤0.90
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0.15±0.05
|
|
φ2.0
|
2.0±0.2
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≤1.30
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0.15±0.05
|
|
φ2.5
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2.5±0.2
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≤1.50
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0.15±0.05
|
|
φ3.0
|
3.0±0.2
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≤1.80
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0.20±0.05
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|
φ3.5
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3.5±0.2
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≤2.0
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0.20±0.05
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|
φ3.8
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3.8±0.2
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≤2.2
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0.20±0.05
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|
φ4.0
|
4.0±0.3
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≤2.5
|
0.20±0.05
|
|
φ4.5
|
4.5±0.3
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≤2.7
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0.20±0.05
|
|
φ5.0
|
5.0±0.3
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≤3.0
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0.20±0.05
|
|
φ6.0
|
6.0±0.3
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≤3.6
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0.25±0.05
|
|
φ6.5
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6.5±0.3
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≤4.0
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0.25±0.05
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|
φ7.0
|
7.0±0.3
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≤4.2
|
0.25±0.05
|
|
φ8.0
|
8.0±0.3
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≤4.8
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0.25±0.05
|
|
φ9.0
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9.0±0.3
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≤5.3
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0.25±0.05
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φ10.0
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10.0±0.2
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≤5.8
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0.25±0.05
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φ11.0
|
11±0.2
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≤6.8
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0.25±0.05
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φ12
|
12±0.2
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≤7.1
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0.35±0.05
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φ14
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14.0±0.3
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≤8.2
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0.35±0.05
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|
φ15
|
15±0.3
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≤15
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0.35±0.05
|
|
φ16
|
16±0.3
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≤9.4
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0.35±0.05
|
|
φ17
|
17±0.3
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≤10
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0.35±0.05
|
|
φ18
|
18±0.3
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≤10.5
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0.35±0.05
|
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φ19
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19±0.3
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≤11.2
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0.35±0.05
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|
φ20
|
20±0.3
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≤11.8
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0.35±0.05
|
|
φ21
|
21±0.3
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≤12.3
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0.35±0.05
|
|
φ22
|
22±0.3
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≤12.6
|
0.35±0.05
|
|
4:1
|
|||
|
φ2.5
|
2.5±0.2
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≤0.7
|
0.15±0.1
|
|
φ3.2
|
3.0±0.2
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≤0.8
|
0.15±0.1
|
|
φ4.0
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4.0±0.2
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≤1
|
0.15±0.1
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|
φ5.0
|
5.0±0.2
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≤1.2
|
0.15±0.1
|
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φ6.0
|
6.0±0.2
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≤1.5
|
0.15±0.1
|
|
φ7.0
|
7.0±0.2
|
≤1.8
|
0.2±0.1
|
|
φ8.0
|
8.0±0.3
|
≤2
|
0.2±0.1
|
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 also specialize in producing customized products and developing products with special requirements according to customer needs. Our production processes adhere 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.
At Shanghai Wellco International Limited, we offer a wide range of products including:
We prioritize quality and ensure that our products meet the highest standards. We conduct a pre-production sample before mass production and a final inspection before shipment to guarantee the quality of our products.
When you choose Shanghai Wellco International Limited, you can expect:
We offer the following services:
Suppliers with verified business licenses
Audited Supplier 
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