Exquisite Double Wall Heat Shrink Tube
Our double-wall heat shrink tubing is a masterpiece crafted from the finest soft polyolefin and innovative hot melt adhesive co-extrusion. Designed with precision, the outer polyolefin layer serves as an impeccable insulator, offering a halogen-free, flame-retardant shield. The inner layer boasts a superior hot melt adhesive, expertly engineered to cushion mechanical strain and provide exceptional sealing capability. This versatile tubing excels in insulation protection for wires and cables, safeguarding wiring and connectors against elements such as water and moisture. Perfectly suited for diverse industries, including electronics, automobiles, and communications, our product sets the standard in advanced protective solutions.
Outstanding Product Features
*Available in versatile shrinkage ratios of 3:1 or 4:1 for tailored applications
*Premium hot melt adhesive combined with high shrinkage ratio ensures superior sealing performance
*Effortlessly provides sealing and insulation protection for sophisticated electronic connections
*Facilitates easy repair of damaged insulation without necessitating removal of connectors
*Operates efficiently within a broad temperature range of -55ºC to 125ºC
*Initiates shrinkage at a temperature as low as 80ºC for swift application
*Achieves complete shrinkage at a minimum temperature of 110ºC for optimal fit
| Item |
Index requirements |
Test Method |
Typical Value |
Longitudinal shrinkage
(200±5ºC 3minute) |
±10% |
ASTM D 2671 |
±7% |
| Eccentricity |
≤35% |
ASTM D 2671 |
15% |
| Tensile Strength |
≥9.0MPa |
ASTM D 638 |
10 MPa |
| Elongation at break |
≥250% |
ASTM D 638 |
500% |
Elongation at break after aging
(Heat aging 158ºC,168hours) |
≥100% |
ASTM D 638 |
300% |
Thermal shock
(4hours,200±5ºC) |
No cracks, no flow, no dripping on the outer layer |
ASTM D 2671 |
pass |
Low temperature flexibility
(-55ºC,4hours) |
No cracks |
ASTM D 2671 |
pass |
| Dielectric Withstand Voltage and Breakdown |
2500V,60sec,No breakdown |
ASTM D 2671 |
pass |
| Volume resistivity |
≥1012Ω·cm. |
ASTM D 876 |
1014Ω·cm |
Copper corrosion
(16 hours,121±2ºC |
No corrosion |
ASTM D 2671 |
pass |
| Copper stability(158ºC,168hours) |
Elongation≥100% |
ASTM D 2671 |
pass |
| Flame retardant properties |
Vertical combustion-V0,Horizontal burning-HB |
AMS-DTL-23053/5 |
pass |
| Specification |
Before Shrink(mm) |
After Shrink(mm) |
| Inner Diameter D |
Wall Thickness T |
Inner Diameter d(max) |
Wall Thickness t1+t2 |
| 3:1 |
Φ1.6 |
2.20±0.20 |
0.30±0.10 |
0.70 |
0.60±0.15 |
| Φ2.4 |
3.00±0.20 |
0.35±0.10 |
0.80 |
0.70± 0.15 |
| Φ3.2 |
4.00±0.20 |
0.40±0.10 |
1.05 |
1.00±0.15 |
| Φ4.8 |
5.50±0.30 |
0.45±0.10 |
1.60 |
1.10±0.15 |
| Φ6.4 |
7.30±0.30 |
0.50±0.10 |
2.10 |
1.25±0.15 |
| Φ7.9 |
8.30±0.30 |
0.55±0.15 |
2.70 |
1.30±0.20 |
| Φ9.5 |
10.4±0.40 |
0.55±0.15 |
3.10 |
1.35±0.20 |
| Φ12.7 |
13.5±0.50 |
0.60±0.15 |
4.20 |
1.60±0.20 |
| Φ15.4 |
16.5±0.50 |
0.65±0.18 |
5.10 |
1.75±0.25 |
| Φ19.1 |
20.5±0.50 |
0.70±0.18 |
6.30 |
1.85±0.25 |
| Φ25.4 |
26.5±0.50 |
0.75±0.18 |
8.40 |
2.05±0.25 |
| Φ30 |
32.0±1.00 |
0.75±0.18 |
10.0 |
2.10±0.25 |
| Φ39 |
41.0±1.00 |
0.85±0.20 |
13.0 |
2.55±0.30 |
| Φ50.8 |
53.0±1.00 |
0.85±0.20 |
17.2 |
2.75±0.30 |
| Φ64 |
67.0±2.00 |
0.90±0.20 |
21.3 |
2.80±0.30 |
| 4:1 |
4/1 |
4.30±0.20 |
0.40±0.10 |
1.00 |
1.10±0.15 |
| 6/1.5 |
6.40±0.20 |
0.45±0.10 |
1.50 |
1.30±0.15 |
| 8/2 |
8.30±0.30 |
0.50±0.15 |
2.00 |
1.35±0.20 |
| 12/3 |
13.3±0.30 |
0.55±0.15 |
3.00 |
1.75±0.20 |
| 16/4 |
16.4±0.40 |
0.60±0.15 |
4.00 |
1.85±0.20 |
| 20/5 |
20.5±0.50 |
0.65±0.20 |
5.00 |
2.10±0.30 |
| 24/6 |
26.0±0.50 |
0.65±0.20 |
6.00 |
2.20±0.30 |
| 32/8 |
32.8±1.00 |
0.75±0.20 |
8.00 |
2.60±0.30 |
| 40/10 |
41.0±1.00 |
0.80±0.20 |
10.0 |
2.80±0.30 |
| 52/13 |
53.0±1.00 |
0.80±0.20 |
13.0 |
2.90±0.30 |
| 60/15 |
62.0±2.00 |
0.90±0.20 |
15.0 |
3.30±0.30 |
Company Profile
Comprehensive Factory Profile.
Founded in 2010, Dongguan Zhonghe Electronics Co., Ltd. stands as a beacon of innovation in high-tech manufacturing, specializing in the development, production, and marketing of Cable Sleeves. We pride ourselves on delivering tailored protection solutions to our valued clients. Our state-of-the-art headquarters is strategically located in Qingxi Town of Dongguan City. Recognizing the growth of renewable energy, we expanded in 2020 by establishing Suzhou Zhonghe New Energy Technology Co., LTD in Jiangsu. Our diverse product lineup includes Corrugated Pipes, Braided Sleeves, Self-rolling Sleeves, Heat Shrink Tubes, Cold Shrink Tubes, and Fiber Tubes, along with comprehensive accessories designed to meet the highest standards of quality and innovation.
To date, we've had the privilege to serve over 3000 esteemed brands, with our cutting-edge products reaching 102 countries worldwide. Our annual production of 60 million meters of Cable Sleeves is utilized by a myriad of automotive OEMs and Wiring manufacturers, underscoring our impact within the industry. We are proud to have cultivated strategic partnerships with industry giants such as BYD, Yutong Bus, AVIC, and other reputable domestic and international corporations and public companies. Our commitment to excellence and innovation propels us forward as a leader in the field.
FAQ
01 : Why choose us?
A:1.We have more than 15 years of experience in this industry!
2.Research and development capacity- We have one of technical team who can develop and design the product according to the requirements of customers!
3.We have a professional sales team to provide excellent service for you!
02 : What's the MOQ for your production?
A: We accept both large and small order, please contact us for details.
03: Can l expect to get the sample?
How long can l expect to get it?
A: Sure, Free samples can sent to you for test. About 4-6 days.
Shipment according to distance and courier company.
04 : Can you do the design for us?
A: Yes, We are a professional manufacturer who can design for you.
05 : What's your payment term?
A: 30% T/T Deposit +Balance before Shipment.
06 : What's the list of certificates you hold?
A:IATF16949, RoHS, CE, EN45545 Test Report, ELV Test report.
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