| Certification: | RoHS, ISO, Reach UL |
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| Color: | Black, Blue, Yellow, Red |
| IP Rating: | IP68 |
| 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 
Materials: Fluoroelastomer
Operating temperature range: -55ºC~200ºC
Contraction temperature: above 175ºC
Contraction ratio: 2:1
Features: High-temperature resistance, flame retarding, flexibility, oil resistance, acid and alkali resistance
Applications: Suitable for protection of electronic devices in an environment with high temperature and oil and insulation protection of resistors, capacitors, and thermocouples
Color: Black, Red, Yellow, Blue
UL Approved
Company name: Shanghai Wellco International Limited
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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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≥8.2MPa
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ASTM D 2671
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≥12 MPa
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Elongation at break
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≥250%
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ASTM D 2671
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≥400%
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Elongation after ageing
(250ºC,168hrs)
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≥200%
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ASTM D 2671
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≥300%
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Heat shock(300ºC,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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pass
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Dielectric strength
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7.9 KV/mm min.
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ASTM D 2671
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≥12 KV/mm
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Volume resistivity
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109Ω·cm min.
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ASTM D 876
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≥109Ω·cm
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Corrosion
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No corrosion
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ASTM D 2671
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pass
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Flammability
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Self-extinguishing
within 15s
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ASTM D 2671
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pass
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Fluids resistance (23ºC ,24hrs)
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|||
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Tensile strength
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8.2MPa min.
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ASTM D 2671
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≥12 MPa
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Elongation at break
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250% min.
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ASTM D 2671
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≥400%
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Normal wall Type
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||||
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Size
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(mm) As Supplied min.)
Inside diameter
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(mm) After recovered
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||
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inch
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mm
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(max.)Inside diameter
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Wall thickness
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3/32
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Ф2.4
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2.4
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1.2
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0.51±0.08
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1/8
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Ф3.2
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3.2
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1.6
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0.76±0.13
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3/16
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Ф4.8
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4.8
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2.4
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0.89±0.18
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1/4
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Ф6.4
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6.4
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3.2
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0.89±0.18
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3/8
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Ф9.5
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9.5
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4.8
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0.89±0.18
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1/2
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Ф12.7
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12.7
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6.4
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0.89±0.18
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3/4
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Ф19.1
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19.1
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9.5
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1.07±0.21
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1
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Ф25.4
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25.4
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12.7
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1.25±0.30
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1 1/2
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Ф38.1
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38.1
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19.1
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1.40±0.38
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2
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Ф50.8
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50.8
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25.4
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1.65±0.43
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thin wall Type
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||||
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size
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(mm)As supplied
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(mm) After recovered
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||
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inch
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mm
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(min.) Inside diameter
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(max.)Inside diameter
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Wall thickness
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3/32
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Ф2.4
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2.4
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1.2
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0.30±0.08
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1/8
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Ф3.2
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3.2
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1.6
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0.33±0.08
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3/16
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Ф4.8
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4.8
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2.4
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0.36±0.10
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1/4
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Ф6.4
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6.4
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3.2
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0.41±0.10
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3/8
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Ф9.5
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9.5
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4.8
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0.48±0.10
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1/2
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Ф12.7
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12.7
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6.4
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0.48±0.10
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3/4
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Ф19.1
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19.1
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9.5
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0.69±0.10
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|
1
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Ф25.4
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25.4
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12.7
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0.79±0.10
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1 1/2
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Ф38.1
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38.1
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19.1
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0.94±0.10
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2
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Ф50.8
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50.8
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25.4
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1.02±0.10
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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 wire and cable insulation, connection, waterproofing, high temperature resistance, chemical resistance, EMI protection, and mechanical protection.
With our 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, and PTFE. These products find 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.
At Shanghai Wellco International Limited, we also offer customization and development of products with special requirements based on 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 radiation crosslinking insulation materials. With over 20 years of experience in insulation, we have established ourselves as a reliable and trusted supplier in the industry.
At Shanghai Wellco International Limited, we offer a wide range of high-quality products:
We prioritize the quality of our products and ensure our customers receive the best. We implement strict quality control measures, including:
We provide various services to meet our customers' needs:
Suppliers with verified business licenses
Audited Supplier 
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