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Heat Shrink Tube

Tongxiang Shineknot Lighting Co,.Ltd: Your Professional Heat Shrink Tube Manufacturer!

 

Tongxiang Shineknot Lighting Co,.Ltd was founded in 2010. We have specialized in led lighting field for more than 14 years. The company's main products include light bulb, LED bulb light, LED spotlight bulb, LED fluorescent tube, traditional light, heat shrink tube, etc.

 
 
Why choose us?

Professional one-stop service

From product quotation, customization, production, follow-up manufacturing, receiving, inspection, storage, booking, customs clearance, filling the container, we check the whole process to ensure that your goods are delivered on time. Whether it is a small quantity of bulk cargo or sending a full container of goods, we are able to provide both quality service.

Strong supply chain

We have up to 500 supply chains and 5,000 products. We can provide both standardized products and customized products with flexible MoQ and timely delivery.

Sales market

Our main export market: the south east Asia, middle east, south pacific and Africa.

Comprehensive business solutions

Tell us what you need, and we'll analyse your market and provide a comprehensive business solution. We will collaborate if you have a project tender, to help you win the contract.

 

Benefits of Heat Shrink Tube
Transparent Heat Shrink Tube Sleeves

Superior insulation

One of the primary benefits of heat shrink tubing is its excellent insulation properties. It provides a protective barrier against moisture, dust, and other contaminants when applied to electrical connections. This ensures that connections remain secure and operational, reducing the risk of short circuits and electrical failures.

PTFE Heat Shrinkable Tube

Enhanced protection

Heat shrink tubing offers robust protection against abrasion, chemicals, and environmental conditions. This makes it ideal for applications in harsh environments where cables and wires are subject to wear and tear. By shielding these components, heat shrink tubing extends their lifespan and maintains their integrity.

Insulation heat shrink tubing made in China(001)

Streamlined aesthetics

Beyond its functional benefits, heat shrink tubing also contributes to a neat and organized appearance. It can bundle multiple wires together, creating a streamlined and professional look. This is particularly valuable in settings where aesthetics and organization are important, such as in automotive, aerospace, and consumer electronics.

PTFE heat shrinkable tube suppliers(001)

Reliable strain relief

Stress and tension on wires and cables can lead to damage over time. Heat shrink tubing provides effective strain relief, distributing stress evenly and preventing undue strain on specific points. This is crucial for maintaining the reliability and performance of electrical connections in dynamic and high-movement applications.

 

Product Specifications

 

Product name

Double Wall Heat Shrink Tubing

Product material

PE+hot melt adhesive

Contraction ratio

3:1

Starting contraction temperature

70℃

Full contraction temperature

125℃

Internal glue melting temperature

70-100℃

Size

Size before shrinkage(mm)

Shrink size(mm)

Inside diameter

Wall
thickness

Deviation rate(9)

Inside diameter

Wall
thickness

+1.6

2.00±0.20

0.35±0.10

≤35%

0.70

0.55±0.15

φ24

2.80±0.20

0.35±0.10

0.80

0.60±0.15

3.2

3.80±0.20

0.40±0.10

1.05

1.00±0.15

04.8

5.30±0.20

0.45±0.10

1.60

1.10±0.15

φ5.4

7.30±030

0.45±0.10

7.10

1.15±0.15

φ7.9

8.30±0.30

0.50±0.15

2.70

1.30±0.20

09.5

10.30±0.30

0.55±0.15

3.10

1.35±0.20

φ12.7

13.30±0.30

0.60±0.15

4.20

1.60±0.20

φ15.4

16.40±0.40

0.65±0.18

5.10

1.75±0.25

19.1

20.50±0.50

0.65±0.18

6.30

1.85±0.25

φ25.4

26.00±0.50

0.75±0.18

8.40

2.05±0.25

+30

32.00±1.00

0.75±0.18

10.0

2.10±0.25

φ 39

41.00±1.00

0.85±0.20

13.0

2.55±0.30

60

51.80±1.00

0.85±0.20

17.2

2.75±0.30

4/1

4.30±0.20

0.40±0.10

35%

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

13.30±0.30

0.55±0.15

3.00

1.75±0.20

16/4

16.40±0.40

0.60±0.15

4.00

1.85±0.20

20/5

20.50±0.50

0.65±0.20

5.00

2.10±0.30

24/6

26.00±0.50

0.65±0.20

6.00

2.20±0.30

32/8

32.80±1.00

0.75±0.20

8.00

2.60±0.30

40/10

41.00±1.00

0.80±0.20

10.0

280±0.30

52/13

53.00±1.00

0.80±0.20

13.0

2.90±0.30

 

Application of Heat Shrink Tube
 
productcate-750-550

Heat shrink tubing in the automotive industry

Heat shrink tubing plays a critical role in automotive applications, where wire protection, insulation, and durability are essential.

 

Protecting wiring harnesses with dual-wall adhesive heat shrink tubing

In the automotive industry, wiring harnesses are constantly exposed to high temperatures, friction, and chemical exposure. Dual-wall adhesive heat shrink tubing provides both insulation and an adhesive inner layer, which bonds tightly to the wires and protects against fuel, oil, and chemicals. This tubing is ideal for wrapping wiring in engine compartments, as it prevents corrosion and ensures connections remain intact in high-vibration environments. By sealing out moisture, adhesive heat shrink tubing effectively extends the life of the vehicle’s electrical system.

 

Reinforcing battery terminals with heavy-wall heat shrink tubing

Battery terminals are prone to corrosion, especially in colder climates where salt and moisture can cause rapid degradation. Heavy-wall heat shrink tubing with a thick polyolefin layer provides robust protection against environmental exposure, reducing terminal failure. It also adds strain relief, ensuring terminals maintain connectivity even under stress.

Marine applications: Saltwater-resistant heat shrink solutions

The marine environment is highly corrosive, making it essential to protect electrical components from saltwater exposure and corrosion.

 

Waterproofing cable splices with adhesive-lined heat shrink

Marine cables often require waterproof splices to maintain connectivity despite constant exposure to moisture. Adhesive-lined heat shrink tubing provides an excellent seal, protecting against corrosion and oxidation.

 

Sealing battery compartments with heavy-wall tubing and cable ties

Marine battery compartments benefit from heavy-wall tubing to prevent corrosion in harsh saltwater environments. Combined with heavy-duty nylon cable ties for secure bundling, this setup adds durability by reducing wear on connectors due to vibration and minimizing battery terminal corrosion, common in boats.

productcate-700-550
productcate-750-550

Industrial manufacturing: Safety and organization with heat shrink tubing

In industrial settings, heat shrink tubing helps maintain organized wiring, provides strain relief, and protects against abrasion and chemical exposure.

 

Organizing electrical panels with color-coded polyolefin heat shrink

Industrial control panels and wiring systems can benefit from color-coded polyolefin heat shrink tubing to ensure organized, easily identifiable wires. By color-coding, technicians can reduce troubleshooting time and improve safety by minimizing the risk of wiring mistakes.

Electronics and telecommunications: Insulation and noise reduction

Heat shrink tubing offers unique benefits for delicate electronics and telecommunication cables, where insulation and interference reduction are key.

 

Reducing signal interference in telecommunication cables

Telecommunication cables, especially fiber optic and coaxial lines, can benefit from shielded braided sleeving to reduce electromagnetic interference. This sleeving provides additional shielding, making it useful for high-frequency cables in densely wired telecom facilities.

 

Encapsulating LED and PCB connections with thin-wall heat shrink

LED strips and printed circuit boards (PCBs) used in high-density electronics require protection from short circuits, moisture, and dust. Thin-wall polyolefin tubing provides a snug fit around small connectors without adding bulk, ensuring components stay insulated while remaining lightweight. Thin-wall heat shrink tubing is also ideal for creating compact connections in smartphones, computers, and other compact electronics.

productcate-750-550

 

 

Packaging, Shipping and Payment

We provide LCL and FCL one-stop service. Multi shipping methods are available. DDU or DDP can be choosing according to your demand.

We accept many payment methods such as L/C, D/P, T/T, Paypal, Western Union and so on.

 

productcate-781-205

productcate-920-650
productcate-920-650
 

Certifications

 

productcate-1-1

 

 

FAQ

Q: How does heat shrink tubing work?

A: Heat shrink tubing uses a material with a "memory". Heating the tubing above a certain temperature changes its molecular structure, causing it to revert to its original, smaller size. This makes the tubing conform tightly to the component it surrounds.

Q: What is the primary purpose of heat shrink tubing?

A: The main purpose of heat shrink tubing is to provide insulation, protection, and sealing for electrical connections, wires, and components. It insulates against electrical shorts, protects against environmental factors, reinforces connections, and can be used for color-coding.

Q: What are the common materials used for heat shrink tubing?

A: Polyolefin is the most common material for heat shrink tubing, which is versatile and cost-effective. Other materials include PVC, Teflon (PTFE), Kynar, and silicone, each offering unique properties like higher temperature resistance, chemical resistance, or flexibility. Heat shrink tubing materials range from polyolefin to PVC, Teflon, Kynar, and silicone.

Q: What are the different types of heat shrink tubing?

A: Heat shrink tubing comes in various types, including thin-wall, medium-wall, and heavy-wall (for mechanical protection and sealing), dual-wall (with adhesive lining for moisture sealing), high-temperature (using materials like PTFE or Kynar), and specialized types like high-ratio (e.g., 6:1) or heat shrink fabrics.

Q: What is a shrink ratio, and why is it important?

A: The shrink ratio indicates how much the tubing will shrink when heated. A 2:1 ratio means the tubing will shrink to half its original diameter. Selecting the correct shrink ratio is essential for ensuring a tight, secure fit over the component being protected. The right ratio ensures the tubing fits snugly on both ends while still fitting over the larger part.

Q: How do I choose the correct size of heat shrink tubing?

A: Measure the largest diameter of the component the tubing needs to fit over before shrinking. Then measure the smallest diameter or the wire bundle size to be covered after shrinking. Select tubing with an expanded diameter that is at least 20-30% larger than the largest component diameter to allow for easy fitting, and ensure that the shrunk diameter is smaller than the smallest component diameter for a tight fit.

We're professional heat shrink tube manufacturers in China, specialized in providing high quality custom service. If you're going to wholesale bulk high-grade heat shrink tube, welcome to get pricelist and quotation from our factory.

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