| 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 for insulation and mechanical protection in severe chemical and thermal environments.
Constructed with PTFE, this heat shrinkable tubing offers exceptional high-temperature performance, chemical resistance, high insulation, and excellent mechanical properties. It is widely used in electronic, aerospace, military, and communication fields.
The W-SPTFE 1.7:1 4:1 PTFE Heat Shrinkable Tubing is perfect for covering hydraulic hose and couplings, preventing contamination and corrosion. Its high mechanical strength and extremely low coefficient of friction make it ideal for reducing damage to bearing shafts and similar applications.
Choose the W-SPTFE 1.7:1 4:1 PTFE Heat Shrinkable Tubing for reliable insulation, mechanical protection, and durability in the most demanding environments. Trust Shanghai Wellco International Limited for high-quality products that meet industry standards.
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Property
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Requirement
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Test method
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Typical data
|
|
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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≥17.3 MPa
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ASTM D 2671
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≥ 22MPa
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|
Elongation at break
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≥200%
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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
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Flammability
|
VW-1
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UL224
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pass
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|
Dielectric constant
|
|
|
2.1
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|
Friction coefficient
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|
|
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
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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
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|
φ1.5
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1.5±0.2
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≤0.90
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0.15±0.05
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φ2.0
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2.0±0.2
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≤1.30
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0.15±0.05
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φ2.5
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2.5±0.2
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≤1.50
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0.15±0.05
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φ3.0
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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
|
|
φ3.8
|
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
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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
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5.0±0.3
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≤3.0
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0.20±0.05
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|
φ6.0
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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
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7.0±0.3
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≤4.2
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0.25±0.05
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|
φ8.0
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8.0±0.3
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≤4.8
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0.25±0.05
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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
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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
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15±0.3
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≤15
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0.35±0.05
|
|
φ16
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16±0.3
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≤9.4
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0.35±0.05
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|
φ17
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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
|
|
φ19
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19±0.3
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≤11.2
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0.35±0.05
|
|
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
|
≤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
|
4.0±0.2
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≤1
|
0.15±0.1
|
|
φ5.0
|
5.0±0.2
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≤1.2
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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
|
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 applications, chemical resistance, EMI protection, and mechanical protection for wire and cable.
Backed by strong technical expertise 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, and PTFE. Our products find extensive use in electronic communication, automobile, high-speed rail, electric motor, aviation, medical, and other industries, providing insulation, water-proofing, electrostatic shielding, oil resistance, chemical resistance, and high-temperature protection. Rest assured, our products have obtained UL certification, RoHS compliance, and REACH compliance.
At Shanghai Wellco International Limited, we also specialize in producing customized products and developing solutions to meet specific customer requirements. 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 based in Shanghai, China and have been serving customers since 2017. Our office consists of a dedicated team of 5-10 people.
We prioritize quality and ensure it through various measures:
At Shanghai Wellco International Limited, we offer a range of high-quality products:
There are several reasons why you should buy from us:
We offer a range of services to meet your needs:
Suppliers with verified business licenses
Audited Supplier 
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