Suzhou Volsun Electronics Technology Co., Ltd.
You are here: Home » Products » Heat Shrink Tube » High Shrink Ratio 125G Dual Wall for Sealing Insulation

High Shrink Ratio 125G Dual Wall for Sealing Insulation

  • Volsun dual wall heat shrink tube is made of crosslined polyolefin material and hot melt adhesive lined inside.
  • With excellent flame retardant, insulation and waterproof properties.
  • Widely used for the insulation protection of wire harness, cables, etc. 
  • Sizes, colors and packing are available to custom.
Availability:
Quantity:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button
  • SBRS-125G(2X)(3X)(4X)

  • VOLSUN

Description

High Shrink Ratio 125G Dual Wall for Sealing Insulation is an advanced heat shrink tubing designed to provide excellent insulation, sealing, and protection for various industrial applications. It is made from a combination of crosslinked polyolefin material and a double-layered hot melt adhesive. The outer layer consists of polyolefin, while the inner layer features a hot melt adhesive that enhances sealing strength and absorbs mechanical strain. This unique structure makes it ideal for insulating, sealing, waterproofing, and protecting wires, cables, wire harnesses, and metal pipes from corrosion and leaks.


The product’s dual-wall construction offers significant advantages in terms of insulation and corrosion resistance. The inner hot melt adhesive layer ensures a strong, tight seal, preventing moisture, dust, and contaminants from entering sensitive areas. This high shrink ratio tubing (available in 2:1, 3:1, and 4:1) offers versatility to fit a wide range of wire and cable sizes, providing a secure and durable solution.


The High Shrink Ratio 125G Dual Wall for Sealing Insulation is perfect for use in electronics, automotive, telecommunications, and construction industries, where reliable sealing and insulation are essential to ensure long-lasting protection from environmental factors like moisture, UV rays, and mechanical wear.


Features


  • Heat shrink ratio: 2:1,3:1, 4:1

  • Flexible, fireproofing, environmentally friendly, UV resistance

  • Shrink temperature: 70℃ ~ 125℃

  • Using temperature: -45℃ ~ 125℃

  • Compliance RoHS

  • Standard color: black, customization for other colors is available.

Technical specifications of polyolefin outer layer


Item

Typical value

Test method

Tensile Strength

≥10.4MPa

ASTM D 2671

Elongation at Break

≥200%

ASTM D 2671

Tensile strength after thermal aging

≥7.3MPa

158℃×168h

Elongation at break after thermal aging

≥100%

158℃×168h

Axial rate of change

-8~+8%

ASTM D 2671

Flame retardancy

pass

ASTM D 2671 B

Breakdown strength

≥15kV/mm

IEC 60243

Volume resistivity

≥1014Ω.cm

IEC 60093

Technical specifications of hot melt adhesive inner layer


Item

Typical value

Test method

Softening point

95±5℃

ASTM E 28

Water absorption

<0.2%

ASTM D 570

Peel strength (adhesive to PE)

≥120N/25mm

ASTM D 1000

Peel strength

≥80N/25mm

ASTM D 1000

2:1 Dimensions


Type

 

Supply bore D(mm)

Full recovered size (mm)

Standard packing

(meter/plate, meter/pcs)

Inner diameter

Average total wall thickness w1

Adhesive

wall thickness w2

Φ1.6

≥1.6

≤0.80

0.60±0.3

0.30±0.2

200

Φ2.4

≥2.4

≤1.20

0.70±0.3

0.35±0.2

200

Φ3.2

≥3.2

≤1.60

0.70±0.3

0.35±0.2

200

Φ4.8

≥4.8

≤2.40

0.80±0.3

0.40±0.2

100

Φ6.4

≥6.4

≤3.20

0.80±0.3

0.40±0.2

100

Φ7.9

≥7.9

≤3.90

0.90±0.3

0.45±0.2

100

Φ9.5

≥9.5

≤4.80

0.90±0.3

0.45±0.2

50

Φ12.7

≥12.7

≤6.40

0.95±0.4

0.45±0.2

25/1.22

Φ15.9

≥15.9

≤7.90

0.95±0.4

0.45±0.2

25/1.22

Φ19.1

≥19.1

≤9.50

1.00±0.4

0.45±0.2

25/1.22

Φ25.4

≥25.4

≤12.7

1.10±0.4

0.50±0.2

25/1.22

Φ31.8

≥31.8

≤15.0

1.15±0.4

0.50±0.2

25/1.22

Φ44.5

≥44.5

≤22.3

1.35±0.4

0.50±0.2

25/1.22

Φ50.8

≥50.8

≤25.4

1.50±0.4

0.60±0.2

25/1.22

3:1 Dimensions


Type

 

Supply bore D(mm)

Full recovered size (mm)

Standard packing

(meter/plate, meter/pcs)

Inner diameter

Average total wall thickness w1

Adhesive

wall thickness w2

Φ2.4

≥2.4

≤0.80

0.80±0.30

0.40±0.2

200

Φ3.2

≥3.0

≤1.00

0.90±0.30

0.30±0.1

200

Φ4.8

≥4.8

≤1.60

1.05±0.30

0.40±0.2

100

Φ6.4

≥6.0

≤2.00

1.25±0.30

0.30±0.1

100

Φ7.9

≥7.9

≤2.70

1.35±0.30

0.45±0.2

100

Φ9.5

≥9.0

≤3.00

1.45±0.30

0.50±0.1

50

Φ12.7

≥12.7

≤4.20

1.65±0.30

0.50±0.2

25/1.22

Φ15.0

≥15.0

≤5.20

1.80±0.30

0.55±0.3

25/1.22

Φ19.1

≥19.1

≤6.30

1.95±0.30

0.60±0.3

25/1.22

Φ25.4

≥25.4

≤8.50

2.00±0.40

0.60±0.3

25/1.22

Φ30.0

≥30.0

≤10.2

2.15±0.40

0.65±0.3

25/1.22

Φ39.0

≥39.0

≤13.5

2.45±0.40

0.75±0.3

25/1.22

Φ50.0

≥50.0

≤17.0

2.75±0.40

0.80±0.3

25/1.22

Φ64.0

≥64.0

≤21.0

3.05±0.40

1.05±0.30

25/1.22

Φ75.0

≥75.0

≤25.0

3.05±0.40

1.05±0.40

25/1.22

Φ90.0

≥90.0

≤30.0

3.05±0.50

1.05±0.40

25/1.22

Φ100.0

≥100

≤34.0

3.10±0.50

1.10±0.40

25/1.22

Φ125.0

≥125

≤42.0

3.10±0.50

1.10±0.40

25/1.22

4:1 Dimensions


Type

 

Supply bore D(mm)

Full recovered size (mm)

Standard packing

(meter/plate, meter/pcs)

Inner diameter

Average total wall thickness w1

Adhesive

wall thickness w2

Φ4.0

≥4.0

≤1.0

1.05±0.30

0.50±0.30

200

Φ6.0

≥6.0

≤1.5

1.15±0.30

0.50±0.30

100

Φ8.0

≥8.0

≤2.0

1.55±0.30

0.60±0.30

100

Φ12.0

≥12.0

≤3.0

1.75±0.30

0.60±0.30

1.22

Φ16.0

≥16.0

≤4.0

2.00±0.30

0.70±0.30

1.22

Φ20.0

≥20.0

≤5.0

2.30±0.40

0.70±0.30

1.22

Φ24.0

≥24.0

≤6.0

2.60±0.40

0.75±0.30

1.22

Φ32.0

≥32.0

≤8.0

3.00±0.50

0.90±0.30

1.22

Φ40.0

≥40.0

≤10.0

2.80±0.50

0.90±0.30

1.22

Φ52.0

≥52.0

≤13.0

3.35±0.50

0.95±0.30

1.22

Frequently Asked Questions:


1. What is the High Shrink Ratio 125G Dual Wall for Sealing Insulation used for?

This product is primarily used for insulating, sealing, and protecting electrical cables, wire harnesses, and metal pipes. It offers superior protection against moisture, corrosion, UV rays, and mechanical strain, making it ideal for applications in industries such as electronics, automotive, telecommunications, and construction.


2. What is the heat shrink ratio for this product?

The heat shrink ratio of this tubing is available in three options: 2:1, 3:1, and 4:1. This means that the tubing can shrink to a fraction of its original size, enabling it to fit a wide range of wire and cable sizes and ensuring a tight and secure seal.


3. What are the key features of the High Shrink Ratio 125G Dual Wall for Sealing Insulation?

The key features include:

Heat Shrink Ratio: 2:1, 3:1, and 4:1 options for versatile application.

Temperature Range: Operating temperature between -45℃ to 125℃, suitable for various industrial environments.

Fireproofing: Flame-retardant properties for safety in hazardous applications.

UV Resistance: Protects against degradation caused by ultraviolet rays.

Moisture and Corrosion Resistance: Prevents water, chemicals, and corrosion from damaging sensitive components.

RoHS Compliance: Meets environmental standards for safe use.


4. How does the hot melt adhesive layer contribute to the performance of this product?

The hot melt adhesive inner layer of the tubing plays a vital role in enhancing sealing strength and absorbing mechanical strain. It forms a strong, waterproof, and airtight seal once the tubing is shrunk, preventing any external factors such as moisture, dirt, or chemicals from reaching the protected area.



Related News

content is empty!

Subscribe To Our Newsletter

China's pioneer manufacturer of cold shrink tube,fiberglass sleeve, heat shrink tube,identification sleeve---Volsun

QUICK LINKS

PRODUCTS

CONTACT INFO

  +86-13776247502
  +86-512-66386808
  No.402, Mudong Road, Mudu Town, Wuzhong District, Suzhou City,215101, Jiangsu Province, China
Leave a Message
Contact Us
Copyright ©️ 2023 Volsun Group. Technology by leadong.com. Sitemap.