| 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. This high-quality tubing is made of PTFE, known for its exceptional high-temperature performance, chemical resistance, insulation, and mechanical properties. It is designed to provide insulation and mechanical protection in severe chemical and thermal environments.
Widely used in electronic, aerospace, military, and communication fields, this heat shrinkable tubing is perfect for covering hydraulic hoses 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 its outstanding performance and reliability. Trust Shanghai Wellco International Limited for all your tubing needs.
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Property
|
Requirement
|
Test method
|
Typical data
|
|
Longitudinal shrinkage
|
≤10%
|
ASTM D 2671
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≤5%
|
|
Tensile strength
|
≥17.3 MPa
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ASTM D 2671
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≥ 22MPa
|
|
Elongation at break
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≥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
|
No corrosion
|
|
Flammability
|
VW-1
|
UL224
|
pass
|
|
Dielectric constant
|
|
|
2.1
|
|
Friction coefficient
|
|
|
0.1
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|
Size
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ID as supplied
|
ID After shrinked
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Wall after shrinked
|
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1.7:1
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|||
|
φ0.5
|
0.7±0.2
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≤0.30
|
0.15±0.05
|
|
φ1.0
|
1.0±0.2
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≤0.60
|
0.15±0.05
|
|
φ1.5
|
1.5±0.2
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≤0.90
|
0.15±0.05
|
|
φ2.0
|
2.0±0.2
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≤1.30
|
0.15±0.05
|
|
φ2.5
|
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
|
0.20±0.05
|
|
φ3.5
|
3.5±0.2
|
≤2.0
|
0.20±0.05
|
|
φ3.8
|
3.8±0.2
|
≤2.2
|
0.20±0.05
|
|
φ4.0
|
4.0±0.3
|
≤2.5
|
0.20±0.05
|
|
φ4.5
|
4.5±0.3
|
≤2.7
|
0.20±0.05
|
|
φ5.0
|
5.0±0.3
|
≤3.0
|
0.20±0.05
|
|
φ6.0
|
6.0±0.3
|
≤3.6
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0.25±0.05
|
|
φ6.5
|
6.5±0.3
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≤4.0
|
0.25±0.05
|
|
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
|
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
|
|
φ10.0
|
10.0±0.2
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≤5.8
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0.25±0.05
|
|
φ11.0
|
11±0.2
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≤6.8
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0.25±0.05
|
|
φ12
|
12±0.2
|
≤7.1
|
0.35±0.05
|
|
φ14
|
14.0±0.3
|
≤8.2
|
0.35±0.05
|
|
φ15
|
15±0.3
|
≤15
|
0.35±0.05
|
|
φ16
|
16±0.3
|
≤9.4
|
0.35±0.05
|
|
φ17
|
17±0.3
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≤10
|
0.35±0.05
|
|
φ18
|
18±0.3
|
≤10.5
|
0.35±0.05
|
|
φ19
|
19±0.3
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≤11.2
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0.35±0.05
|
|
φ20
|
20±0.3
|
≤11.8
|
0.35±0.05
|
|
φ21
|
21±0.3
|
≤12.3
|
0.35±0.05
|
|
φ22
|
22±0.3
|
≤12.6
|
0.35±0.05
|
|
4:1
|
|||
|
φ2.5
|
2.5±0.2
|
≤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
|
≤1
|
0.15±0.1
|
|
φ5.0
|
5.0±0.2
|
≤1.2
|
0.15±0.1
|
|
φ6.0
|
6.0±0.2
|
≤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 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 heat shrink tubes and insulation tubes made from various materials such as modified PE, PVDF, FEP, EPDM, Silicone, FKM, 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.
In addition to our standard product range, we also specialize in producing customized products and 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 based in Shanghai, China. Since 2017, we have been specializing in the production and sales of special heat shrink tubes and other radiation crosslinking insulation materials. With over 20 years of experience in the insulation industry, our founder has established a reputation for delivering high-quality products.
We prioritize quality and ensure that every product meets our standards. Before mass production, we always provide a pre-production sample for 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 heat shrink tubes, heat shrink mould parts, marking sleeves, and cold shrink tubes. Our products are designed to provide efficient and reliable insulation solutions.
When it comes to purchasing insulation materials, there are several reasons why you should choose us over other suppliers. We have a dedicated team of professionals who focus on research and development, ensuring that our products are of the highest quality. With our extensive experience in the industry, we understand the specific needs of our customers and strive to meet their requirements.
We offer a range of services to make your purchasing experience convenient and hassle-free. We accept various delivery terms, including FOB, CFR, CIF, EXW, CIP, FCA, DDP, DDU, and express delivery. You can make payments in USD, EUR, or CNY through methods such as T/T, L/C, MoneyGram, PayPal, or Western Union. Our team is fluent in English, Chinese, and Japanese, ensuring effective communication throughout the process.
Suppliers with verified business licenses
Audited Supplier 
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