Heat Shrink Tube

Heat Shrink Tube

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Why Choose Volsun Heat Shrink Tube?

As a professional manufacturer with more than ten years of production experience, we are committed to providing customers with high-quality and diversified heat shrink tubing products. Our heat shrink tubing uses high-quality raw materials and can produce different material types with complete specifications to meet various application requirements. We have passed the ISO9001 quality system certification to ensure stable and reliable product quality.

In addition, our heat shrink tubing has excellent high temperature resistance and excellent insulation performance, which effectively guarantees electrical safety. We strictly abide by environmental protection standards, and our products have obtained RoHS and REACH certifications. More importantly, we provide customized services and can customize colors or packaging according to customer needs to achieve personalized solutions.

What is Heat Shrink Tubing?

Heat shrink tubing is a tubular product made of a special heat shrink material, mainly made of polyolefins (such as polyethylene or polypropylene) or other thermoplastic materials, with the characteristic of shrinking when heated, usually with a shrinkage ratio of 2:1 or higher. This kind of tube has a large diameter at room temperature. When heated to a certain temperature, the diameter of the tube will shrink and tightly wrap the covered object, such as the terminals and connections of wires and cables, providing excellent electrical insulation, waterproof, moisture-proof, dust-proof and mechanical protection.

Heat shrink tubing is easy to install and can be shrunk by heating equipment such as hot air guns. It can adapt to objects of different sizes and is widely used in many industries such as electronics, electrical, communications, automobiles, aviation, ships, and construction. It can also be used for the identification of wires and cables for easy identification and management. Its working principle is based on the thermal memory effect of thermoplastic materials, making heat shrink tubing a very practical and flexible insulation and protection material.

Heat Shrink Tube

What are the Categories of Heat Shrink Tube？

In today's electrical engineering and mechanical manufacturing fields, heat shrink tubing is becoming increasingly important as an efficient and convenient insulation and protection material. Faced with a wide variety of heat shrink tubing products with different functions on the market, how to accurately choose has become the focus of many engineers. Next, we will start from the two dimensions of heat shrink tubing material and function, and take you to deeply analyze the characteristics and applicable scenarios of various types of heat shrink tubing.

Classification by material

Polyolefin heat shrink tubing has excellent electrical insulation and physical mechanical properties, and is widely used in insulation protection, connection and sealing of wires and cables.

Silicone rubber heat shrink tubing has excellent high temperature resistance, ozone resistance and UV resistance, and is suitable for electrical insulation and protection in high temperature environments.

Fluororubber heat shrink tubing has excellent chemical resistance, oil resistance and high temperature resistance, and is suitable for cable or automotive wiring harness protection in harsh environments.

EPDM heat shrink tubing has good weather resistance, heat resistance and electrical insulation performance, and is mostly used for insulation and protection of outdoor cables.

Diesel resistant heat shrink tubing is specially designed for environments exposed to diesel and other fuels, and has excellent oil resistance and sealing performance.

PTFE heat shrink tubing has extremely high temperature resistance, chemical resistance and electrical insulation performance, and is suitable for high temperature and high corrosion environments.

PVDF heat shrink tubing has good chemical resistance, UV resistance and high temperature resistance, and is suitable for cable protection in harsh environments.

FEP heat shrink tubing has excellent electrical insulation and high temperature resistance, and is highly transparent, making it easy to check the internal cable conditions.

Classification by function

Single-wall heat shrink tubing has a simple structure and shrinks quickly, and is suitable for general electrical insulation and harness sealing protection.

The inner layer of the double-wall heat shrink tubing is hot melt adhesive, and the outer layer is heat shrink material. It has excellent physical and chemical electrical properties and sealing properties, and is widely used in sealing insulation, waterproofing and corrosion protection of various harnesses, wires and cables, and metal pipes and rods.

Medium-thick wall heat shrink tubing has stronger mechanical strength, wear resistance and impact resistance, and is suitable for occasions with greater mechanical stress.

Text or patterns can be printed on the surface of the identification heat shrink tubing for cable identification and marking. The product printing has excellent abrasion and wear resistance, and maintains a permanent identification effect.

Busbar heat shrink tubing has excellent physical, chemical and electrical properties. Its main function is the electrical insulation of connectors and the insulation protection of busbars in various situations. It is widely used in the insulation protection of medium and low voltage switch cabinets and indoor busbars.

Non-slip pattern heat shrink tubing has special patterns on its surface to increase friction. Its function is anti-slip decoration. It is mainly used in fishing gear, sports equipment, fitness equipment, daily necessities, various tools, kitchen utensils and other fields.

Flame retardant heat shrink tubing has self-extinguishing properties and is suitable for environments with special requirements for fire protection; Non-flame retardant heat shrink tubing is used for general electronic and electrical wiring harness insulation protection occasions.

Application Of Heat Shrink Tube

Heat shrink tubing is a tubular product that shrinks when heated. Its excellent insulation, protection, sealing and identification functions

make it an indispensable and important material in various fields and widely used in many industries.

Electric power and electronics industry

In the power industry, heat shrink tubing is mainly used for the protection of electrical equipment connection lines in substations and the sealing, insulation and protection of cable joints. For example, when connecting medium and low voltage power cables from 1kV to 35kV, the use of heat shrink tubing can effectively prevent moisture from entering the joints, avoid leakage accidents, and enhance the mechanical strength of the joints. In the electronics manufacturing industry, heat shrink tubing is used to protect the pins and solder joints of electronic components on circuit boards. In the manufacturing process of electronic products, the use of heat shrink tubing to wrap component pins can prevent pin short circuits and oxidation, and improve the quality and stability of the product. For external cables of electronic equipment, such as headphone cables, data cables, etc., heat shrink tubing can be used for decoration and protection to prevent the outer skin of the cable from abrasion and breakage.

Automobile industry

In the automobile manufacturing industry, heat shrink tubing is widely used for the protection of automotive wiring harnesses. Automotive wiring harnesses are an important part of automotive electrical systems, and heat shrink tubing can protect wiring harnesses from vibration, abrasion, and other environmental factors. In addition, heat shrink tubing is also used for temporary protection of vehicle body painting lines and temporary repairs during maintenance.

Aerospace and medical equipment industry applications

Heat shrink tubing also has important applications in aerospace and medical equipment. For example, medical-grade FEP heat shrink tubing is resistant to high temperatures, abrasion, cut-through, and various fluids, and is suitable for electrosurgical instruments, medical components and equipment, insulated laparoscopic instruments, etc. In addition, FEP heat shrink tubing is also used for fiber optic cable sheathing to provide electrical insulation and stress relief.

Building and home industry

In the building and home industry, heat shrink tubing is used to protect the connection points and terminal heads of wires and cables to prevent current leakage, short circuits, or ground faults, and ensure the safe operation of electrical systems. Heat shrink tubing can also be used as a marking tool for identification and classification, helping maintenance personnel quickly locate and distinguish different wires, cables, or components.

How to choose a heat shrink tubing?

1.Measure the inner diameter: Measure the maximum diameter of the covered object, and select a heat shrink tubing with a slightly larger inner diameter (10%-20% larger).
2. Determine the shrinkage ratio: Select a suitable shrinkage ratio (such as 2:1, 3:1, 4:1) according to the diameter variation range of the covered object.
3. Select the wall thickness: The wall thickness determines the insulation performance and compressive strength of the heat shrink tubing. Select a heat shrink tubing with a suitable wall thickness according to the required protection level.
4. Consider the material: Select a heat shrink tubing with a suitable material according to the application environment (such as heat resistance and chemical resistance requirements).
5. Determine the length: The length of the heat shrink tubing should be slightly larger than the protected area to ensure that the heat shrink tubing can be fully covered after shrinking.

Why Choose Volsun Heat Shrink Tube?

What is Heat Shrink Tubing?

Heat Shrink Tube

What are the Categories of Heat Shrink Tube？

Application Of Heat Shrink Tube

Electric power and electronics industry

Automobile industry

Aerospace and medical equipment industry applications

Building and home industry

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