
˙Operating temperature range:-60ºC~200ºC
˙Features: higher insulation, high tensile strength, heat resistance. humidity-resistance, durability, flexibility
˙Applications: Used for odor-resistance, frost-resistance, and heat-resistance for wire insulation requiring heat-resistance in
all kinds of electric machinery, electronic machinery, communication machinery, or printer machinery and food or medication
appliances and related products.
Items | Performance Indicators | Typical Value |
Tensile strength | 0.3Kg/mm | >0.30Kg/mm |
Tensile strength after aging | 230ºC x168 hrs | >0.18Kg/mm |
Pressure resistance after heating | 230ºC x 168hrs | >=1/2 original typical value |
Heat resistance | 230ºC x 168 hrs no abnormal | pass |
Bendability at high temperature | 230ºC x 48 hrs., no cracks | pass |
Bendability at low temperature | -10ºC x 1 hr., no cracks | pass |
Insulation Breakdown voltage | 18Kv/mm | >=18/Kv |
Testing standard:UL224 |
Inner Diameter | Inner Diameter Tolerance | Thickness | Outer Diameter | Packaged Length |
dmm | mm | T mm | D mm | M |
0.5 0.8 1.0 1.2 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 | ±0.1 ±0.1 ±0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.2-0.1 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 +0.5-0.3 | 0.40±0.1 0.40±0.1 0.40±0.1 0.40±0.1 0.40±0.1 0.40±0.1 0.40±0.1 0.50+0.12-0.1 0.50+0.12-0.1 0.50+0.12-0.1 0.50+0.12-0.1 0.50+0.12-0.1 0.50+0.12-0.1 0.50+0.12-0.1 0.60+0.15-0.12 0.60+0.15-0.12 0.80+0.20-0.15 0.80+0.20-0.15 0.80+0.20-0.15 0.80+0.20-0.15 0.80+0.20-0.15 0.80+0.20-0.15 0.80+0.20-0.15 0.80+0.20-0.15 1.00+0.20-0.25 1.00+0.20-0.25 1.00+0.20-0.25 | 1.30 1.60 1.80 2.00 2.30 2.80 3.30 4.00 4.50 5.00 5.55 6.00 7.00 8.00 9.20 10.20 11.60 12.60 13.60 14.60 15.60 16.60 17.60 18.60 20.00 21.00 22.00 | 400 200 200 200 200 200 200 200 200 200 200 200 200 200 200 100 100 100 100 100 50 50 50 50 50 50 50 |


Shanghai Wellco International Limited
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 applications 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.
All our products have passed UL certification, RoHS, and REACH standards, ensuring their quality and compliance with industry regulations.
We also specialize in producing customized products and developing solutions to meet specific customer requirements. Our production processes adhere to ISO9001 and IATF16949 quality management system standards, guaranteeing the stability and reliability of our product quality.
About Us
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 brings extensive expertise to our products.
Our Quality Guarantee
We prioritize quality and ensure that every product meets our high 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.
Our Product Range
At Shanghai Wellco International Limited, we offer a variety of products to meet your needs. Our product range includes heat shrink tubes, heat shrink mould parts, marking sleeves, and cold shrink tubes.
Why Choose Us?
When it comes to purchasing heat shrink tubes and insulation materials, there are several reasons why you should choose us:
- Professional R&D, production, and sales team
- Over 20 years of experience in the insulation industry
- High-quality products that meet industry standards
Our Services
We strive to provide excellent services to our customers. Here are the services we offer:
- Accepted Delivery Terms: FOB, CFR, CIF, EXW, CIP, FCA, DDP, DDU, Express Delivery
- Accepted Payment Currency: USD, EUR, CNY
- Accepted Payment Type: T/T, L/C, MoneyGram, PayPal, Western Union
- Languages Spoken: English, Chinese, Japanese