Double Wall Heat Shrink Tube
Crafted from a superior blend of soft polyolefin and hot melt adhesive co-extrusion, our double-wall heat shrink tubing stands as a testament to advanced engineering. The exterior layer-a robust polyolefin-is not only insulating but also halogen-free and flame-retardant, ensuring unparalleled safety. Meanwhile, the interior hot melt adhesive layer offers exceptional cushioning against mechanical strain and boasts formidable sealing capabilities. This versatile product is indispensable for insulation protection across a spectrum of applications, including wires and cables, as well as wiring and connectors that require steadfast sealing, waterproofing, and moisture resistance. Its adaptability makes it a favored choice across diverse industries such as electronics, automotive, and communications.
Product Features
*Shrinkage ratio:3:1 or 4:1
*Discover excellence with our premier hot melt adhesive, complemented by a high shrinkage ratio that guarantees superior sealing.
*Provides unmatched sealing and insulation protection for a wide range of electronic connection applications, ensuring durability and reliability.
*Effortlessly mend damaged insulation layers without the hassle of removing the connector, offering both convenience and efficiency.
*Engineered to perform continuously within a temperature range of -55ºC ~ 125ºC, demonstrating exceptional resilience and adaptability.
*Initiates shrinkage at a starting temperature of 80ºC, ensuring a swift and effective application process.
*Achieves minimum complete shrinkage at 110ºC, validating its efficient performance in various conditions.
| 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
Factory Profile.
Since our inception in 2010, Dongguan Zhonghe Electronics Co., Ltd. has emerged as a beacon of innovation and excellence. We are a high-tech enterprise, passionately committed to the production, research, development, and sales of top-quality Cable Sleeves. From our strategic headquarters nestled in Qingxi Town, Dongguan City, we have expanded our horizons by establishing Suzhou Zhonghe New Energy Technology Co., LTD in Jiangsu in 2020. Our illustrious product range-encompassing Corrugated Pipes, Braided Sleeves, Self-rolling Sleeves, Heat Shrink Tubes, Cold Shrink Tubes, Fiber Tubes, and accessories-continues to deliver unparalleled protection solutions tailored for our discerning customers.
To date, our legacy of quality and service has empowered over 3000 renowned brands, with our premier products reaching 102 countries worldwide. Annually, a staggering 60 million meters of our Cable Sleeves are integrated into diverse automotive OEMs and wiring manufacturers. Our esteemed clientele includes strategic partners such as BYD, Yutong Bus, AVIC, and other prestigious domestic and international enterprises, as well as publicly-listed companies, cementing our reputation for reliability and excellence.
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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