Medium Wall Heat Shrink Sleeves
- CCMT
- CHANGCHUN,CHINA
- Based on the order quantity
- 5 million meters per month
1. The heat shrink tubing with medium wall has a double structure which insulates and seals effectively.
2. The heat shrinkable cable sleeve is made so it can stand heavy hits, resist friction, keep out water and be anti-corrosion. It can easily handle application conditions which one would call tough environments.
3. Medium thickness heat sleeve for cables withstands operation for a long time at -45 to 125 degrees Celsius which is the requirement for the protection of the power, automotive, and industrial equipment sectors
At power, automotive, and industrial equipment, cables and their joints are the weak links. These parts are often continuously subjected to challenging conditions such as high humidity, dirt, oil, and vibration. Generally, protective materials of low-grade are not able to serve multiple demands of insulating, sealing, and protecting the mechanical structure together, which easily result in ingress of liquids, loss of dielectric strength of insulation, and disconnection, besides causing higher maintenance costs and a greater likelihood of production downtime.
Solution:
Our double-layer heat shrink cable sleeve features a cross-linked polyolefin shell layer outside and a hot-melt adhesive layer inside, which together seal a waterproof, moisture-proof, and insulating layer that is waterproof and insulating. It also happens that the product boasts good shock resistance, tear resistance, and resistance to environmental agents that are the three important properties allowing the stable durability of cable joints and terminals during prolonged operation under various working conditions and providing adequate safeguards for electric systems, vehicle wiring, factory installations in short.
Product Introduction:
Medium wall heat shrink tubing is a protective, double-wall insulation layer that consists of a cross-linked polyolefin outer layer and a hot-melt adhesive inner layer. It permits 3 to 1 shrinking. Upon heating, the outer layer contracts tightly to the cable or connection and leaves no gaps, while the melt inside layer becomes liquid and covers a continuous film that serves as a protective barrier and insulator against water, moisture.
Product Parameters:
| Size | As Supplied | After Recovery | Standard length | |||
| mm | Intemal Diameter(mm) | Intemal Diameter | Tube Wall Thickness | Adhesive Thickness | Total Thickness | (M/pc) |
| 10.2/3.0 | ≥ 10.2 | ≤3.0 | 1.4±0.20 | 0.35±0.1 | 1.75±0.25 | 1.22 |
| 16/5.0 | ≥ 16 | ≤5.0 | 1.5±0.20 | 0.40±0.1 | 1.90±0.25 | 1.22 |
| 19.1/5.6 | ≥ 19.1 | ≤5.6 | 2.0±0.20 | 0.45±0.1 | 2.45±0.25 | 1.22 |
| 25/8 | ≥ 25 | ≤8 | 2.0±0.20 | 0.45±0.1 | 2.45±0.25 | 1.22 |
| 28/6 | ≥ 28 | ≤6 | 2.5±0.20 | 0.65±0.1 | 3.10±0.30 | 1.22 |
| 28/9 | ≥ 28 | ≤9 | 2.0±0.20 | 0.50±0.1 | 2.60±0.25 | 1.22 |
| 35/10.2 | ≥ 35 | ≤10.2 | 2.2±0.20 | 0.50±0.1 | 2.70±0.25 | 1.22 |
| 38.1/12 | ≥ 38.2 | ≤12 | 2.2±0.20 | 0.50±0.1 | 2.70±0.25 | 1.22 |
| 43.2/12.7 | ≥43.2 | ≤12.7 | 2.2±0.20 | 0.50±0.1 | 2.70±0.25 | 1.22 |
| 52.1/16 | ≥52.1 | ≤16 | 2.3±0.25 | 0.50±0.15 | 2.80±0.30 | 1.22 |
| 63/19 | ≥63 | ≤19 | 2.5±0.25 | 0.50±0.15 | 3.00±0.30 | 1.22 |
| 75/22 | ≥75 | ≤22 | 2.6±0.25 | 0.50±0.15 | 3.00±0.30 | 1.22 |
| 85/25 | ≥85 | ≤25 | 2.8±0.30 | 0.50±0.15 | 3.30±0.30 | 1.22 |
| 95/29 | ≥95 | ≤29 | 3.1±0.30 | 0.60±0.20 | 3.70±0.35 | 1.22 |
| 115/34 | ≥115 | ≤34 | 3.1±0.30 | 0.60±0.20 | 3.70±0.35 | 1.22 |
| 140/42 | ≥140 | ≤42 | 3.1±0.30 | 0.60±0.20 | 3.70±0.35 | 1.22 |
Product Performance Indicators:
Property | Test Method | Stantard |
| Tensile Strength(Mpa) | ASTM D2671 | ≥ 10.4 |
| Elongation(%) | ASTM D2671 | ≥ 300 |
| Density(g/cm³) | ASTM D792 | 1.2 |
| Longitudinal Change(%) | UL 224 | ≤±10 |
| Elongation after Aging | UL224 158℃×168hrs | ≥ 200 |
| Heat Shock | UL224 225℃×4hrs | No cracking |
| Dielectric Strength(kv/mm) | IEC 243 | ≥ 20 |
| Volume Resistivity(Ω·cm) | IEC 93 | ≥ 1014 |
| Water Absorption(%) | ASTM-D570 | ≤0.5 |
Hot Melt Adhesive Propertis:
| Property | Test Method | Stantard |
| Water Absorption | ASTM D570 | ≤0.2% |
| Softening Point | ASTM E28 | 95℃ |
| Peel Strength(PE) | ASTM D1000 | 120N/25mm |
| Peel Strength(AL) | ASTM D1000 | 80N/mm |
Advantages of Heat Shrink Medium-Wall Cable Sleeves:
1. Excellent Sealing Performance, Protecting Cable Joints and Terminations.
Medium wall tubing is primarily used for making cable joints, terminations and connections. When the shrinkage of heat is completed, the sleeve clings tightly to the object being protected, creating a mechanical protection layer, minimizes the effects of the external environment on the connection and increases the lifespan of the cable system.
2. Impact and Abrasion Resistance, Adaptable to Harsh Working Conditions.
Medium wall heat shrink sleeves are manufactured from cross-linked polyolefins, a material that provides excellent mechanical strength, flexibility, and high resistance to both impacts and abrasion. These properties not only enable them to be resistant to mechanical wear but also to vibration and external impact, thus being ideal for demanding working conditions such as in automotive wiring harnesses, industrial machinery, and electrical systems.
3. Hot Melt Adhesive Inner Wall Design for Comprehensive Environmental Sealing and Insulation Protection.
The interior side of medium wall heat shrink tubing is evenly coated with high-quality hot melt adhesive. When heated, this layer of adhesive melts and gets completely absorbed between the cable and the heat shrink tube, thus forming a stable seal. This not only prevents the entry of moisture, humidity, oil, and dust, but also ensures electrical isolation and provides good electrical insulation, which will help maintain long term stability and safety of the connection.
4. Wide Temperature Adaptability, Meeting Long-Term Stable Operation Requirements.
Medium wall tubing is capable of continuous, stable operation in temperatures ranging from -45℃ to 125℃. The construction of it is very easy since installation at a shrinking temperature of even 125℃ is possible. The exceptional ability to resist both very cold and very hot conditions permits the product to function well in a wide range of temperature conditions from cold, hot, and large temperature swings to provide a durable and reliable shield for power, communications, railway, automotive and industrial applications.
Applications of Medium Wall Heat Shrink Sleeves:
Its good insulation capacity, mechanical protection features, and environmental sealing make it a popular product used in automotive, power, industrial manufacturing, communications, and electronic equipment. Today, it is a typical component used in the applications requiring durable protection of cables, wire harnesses, and key connections throughout their lifetime.
• Maintenance of insulation for wire harnesses: These protective films are widely used in automotive wire harness, industrial control cable, and internal wiring of electrical equipment.
• Cable insulation and sealing: Suitable for medium and high voltage power cable terminals, joints, and connections.
• Protection of electronic components: Can be used for insulation and sealing protection of resistors, capacitors, solder joints as well as other types of electronic connectors.
Why Choose Us?
Technological Strength and Product System.
Over the last 36 years, our company, operating in the field of cable accessories since 1986, has gathered a lot of professional expertise and knowsledges. Making use of the technical assistance of the Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, we have been in the position to master two primary fabrication methods: radiation crosslinking and silicone vulcanization. Our manufacturing capabilities allow for a full range of products, such as both of heat-shrinkable and cold-shrinkable cable accessories and intermediate joints.
Intelligent Manufacturing and Quality Assurance.
We have a modern production base of over 10,000 square meters, more than 200 professional employees, and over 40 specialized production equipment. For our heat-shrinkable tubing series, we have 13 plastic extruders, 10 oil expanders, and 5 air expanders as production lines, with a monthly production capacity of up to 5 million meters, efficiently meeting the needs of large-volume and rapid delivery.
In terms of quality management, we have passed ISO 9001:2015 quality management system certification (No. 00123Q36311R5M/2200). Our products comply with international standards such as CE, RoHS, and REACH, and meet the product material safety certification issued by SGS. Meanwhile, each batch of products is equipped with an independent factory inspection report and a third-party type test report.
International Cooperation:
We already got a number of international markets where our products are being widely used: the Middle East, Southeast Asia, South America and the European Union as well as numerous countries like Saudi Arabia, India, the Philippines, Iran, Thailand, etc. In addition, it has been a great honor and privilege to partner with such globally recognized companies as ABB and Shell.
International Exhibitions:
Our company presented cable accessory solutions for power, new energy, and rail transportation at the 2023 Hannover Messe, which gained the favor of European, Middle East, and Southeast Asian customers. We also carried out thorough technical exchanges with customers abroad to better understand the different conditions abroad from our products that the global market requires to have excellent reliability, and this has helped us significantly strengthen our brand competitiveness in the global market.
FAQ:
1. How does heat shrink cable sleeve achieve waterproof sealing?
During the shrinkage caused by heat, the inner hot-melt glue softens, and the melted layer of the sealant runs into the void between the shielded item and the coating, thereby building a firm waterproof sealing barrier that can stop dampness and foreign bodies from accessing.
2. What types of components can medium wall tubing protect?
Suitable for cable joints, wire harness connection points, terminals, electronic components, and industrial equipment connection parts, providing insulation and protection solutions for different application scenarios.
