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Heat Shrinkable Coupler

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Heat Shrinkable Coupler Specification

Diameter
Varies by size (matched to cable outer diameter)

Locking Type
Shrink-fit

Weight
Varies by size

Features
High dielectric strength, Flame retardant, Weather resistant, Waterproof seal, Easy installation

Cable Type
Power and control cables

Armored Material
Not applicable (non-armored)

Tensile Strength
10 MPa

Rated Temperature
-40C to +105C

Operating Temperature
-40C to +105C

Impedance
Not applicable (for insulation usage)

Insulation
Double wall with adhesive lining

Dielectiric Strength
20 kV/mm

Install Type
In-line/Direct burial/Outdoor

Core Number
Single-core/Multicore compatible

Usage & Applications
Distribution and transmission cable jointing, Industrial electrical repairs

Number of Conductor
Single or multiple

Core Material
Copper or Aluminum (based on cable used)

Conductor Type
Stranded or solid (depends on cable type used)

Conductor Shape
Round

Product Type
Heat Shrinkable Coupler

Length
Standard lengths available (customizable sizes on request)

Voltage
Up to 1 kV

Insulation Material
Cross-linked polyolefin

Application
Cable jointing, Insulation of electrical connectors, Power cable repair

Conductor Material
Copper (for internal connectors, not included)

Jacket Material
Polyolefin

Storage Temperature
-20C to +50C

Connector Color
Red

Shield Material
Copper (optional for shielded types)

Jacket Color
Black

Dimension (L*W*H)
Varies by model (typically cylindrical: refer to datasheet)

Material
Polyolefin

Color
Black (standard)

Size
Customized sizes available

Flame Retardance
Yes, tested to IEC standard

RoHS Compliance
Yes

Minimum Shrink Temperature
120°C

Inner Coating
Thermoplastic adhesive

Shrink Ratio
3:1 or 4:1 (as required)

UV Resistant
Yes

Adhesive Lining
Hot-melt adhesive for environmental sealing

Water Absorption
<0.5% after 24 hours at 23°C

About Heat Shrinkable Coupler

Heat Shrink Coupler is a Tubing suitable to joint Corrugated HDPE pipes, used in Water management, Irrigation, Sanitary, Sewer and Drainage, Construction, Mining industries, Ducting and for underground Cable protection.

These tubes are manufactured from high quality Cross-linked Polyolefin material. Hot melt adhesive lining provides 100% sealing according to IP 68 (Ingress Protection).

It is feasible and the most economic jointing solution compared to Conventional Butt welding or using Snap Fit Coupler or Split coupler.

Features & benefits :

Easy & Quick Installation. No special skill required.
High resistance to Impact & Abrasion.
Suitable for Wet and Dry underground conditions.
Joint in-line with pipe.
Superior elastomeric characteristics allows better conformance over irregular contours.
High Shrink ratio (3:1) helps to reduce the stock requirements with few sizes covering greater pipe application range.
Resistant to Heat, UV rays, Vibration, Sand-blasting & Harsh Industrial conditions.
Customized dimensions, length & colour available.

Technical Qualification Report : QR 1021

SELECTION CHART

All dimensions are in mm

Code
D Min (mm)
d Max (mm)
T±10% (mm)
Spool length (mtr)

GMW 70/22
70
22
2.7
1200

GMW 90/28
90
28
3.0
1200

GMW 105/30
105
30
3.0
1200

GMW 115/34
115
34
3.2
1200

GMW 130/36
130
36
3.2
1200

GMW 140/42
140
42
3.2
1200

GMW 160/50
160
50
3.3
1200

GMW 180/55
180
55
3.3
1200

GMW 200/60
200
60
3.5
1200

GMW 250/70
250
70
3.5
1200

GMW 320/90
320
90
3.5
500

GMW 375/110
375
110
3.5
500

GMW 425/125
425
125
3.5
500

GMW 550/157
550
157
3.5
500

GMW 680/200
680
200
3.5
500

GMW 760/215
760
215
3.5
500

GMW 863/250
863
250
3.5
500

TECHNICAL SPECIFICATION

Properties
Value
Standard

Physical

Tensile Strength
20 Mpa (N/mm2) (min.)
ASTM D638

Ultimate Elongation
350% (Min.)
ASTM D638

Longitudinal Change
-10% (Max.)
ASTM D2671

Hardness
45 ± 10 Shore D
ASTM D2240

Water Absorption
0.5 % (max.)
ASTM D570

Thermal

Accelerated Ageing
(120°C for 500 Hrs)
ASTM D2671

Tensile Strength
8 N/mm² (Mpa) (min.)
ASTM D 638

Ultimate Elongation
250%(Min.)
ASTM D638

Low temperature Flexibility (-40^oC for 4 Hrs.)
No Cracking
ASTM D2671

Heat Shock (250^oC for 30 Min.)
No Cracking or flowing
ESI 09-11

Shrink Temperature
125^oC
IEC 216

Continuous Temperature limit
-40^oC to + 110^oC
IEC 216

Electrical

Dielectric Strength
15 KV/mm. (Min.)
ASTM D149

Volume Resistivity
1 x 10¹⁴ Ohm.cm(min.)
ASTM D257

Dielectric Constant
5 (Max.)
ASTM D150

Secure Cable Joints with Superior Sealing

Our heat shrinkable coupler delivers dependable insulation and environmental sealing for distribution and transmission cable joints. Engineered with a hot-melt adhesive lining and tough, UV-resistant polyolefin jacket, it provides a waterproof and flame retardant barrier suitable for both indoor and outdoor installations.

Versatile and Customizable for Multiple Applications

With customizable lengths and diameters to match varying cable outer diameters, this coupler supports single or multicore configurations and is compatible with both copper and aluminum conductors. Ideal for industrial repairs, power transmission, and control cable jointing, it ensures high dielectric and tensile strength, catering to the demands of modern electrical installations.

FAQs of Heat Shrinkable Coupler:

Q: How is the Heat Shrinkable Coupler installed on power and control cables?

A: Installation involves sliding the coupler onto the cable joint and evenly heating it to at least 120C. The polyolefin sleeve shrinks tightly around the cables, and the hot-melt adhesive inner lining melts to form a waterproof seal. This process ensures secure insulation and environmental protection.

Q: What are the main benefits of using this heat shrinkable coupler for electrical connections?

A: Key benefits include high dielectric strength (20 kV/mm), flame retardance, UV and weather resistance, and a robust waterproof seal. These features minimize the risk of joint failures, provide long-term reliability, and simplify maintenance in industrial and outdoor environments.

Q: Where can the heat shrinkable coupler be used?

A: The coupler is designed for use in cable jointing, electrical connector insulation, and power cable repair. It is suitable for distribution and transmission lines, direct burial, outdoor, in-line, and industrial electrical repair applications.

Q: When should a coupler with a 3:1 vs. 4:1 shrink ratio be chosen?

A: A 3:1 shrink ratio is ideal for cables with moderate diameter variations, while a 4:1 ratio should be selected for applications requiring coverage over cables or splices with significant diameter differences, ensuring a tight fit and effective sealing.

Q: What types of cables and conductor materials are compatible with this product?

A: The coupler is compatible with both power and control cables featuring copper or aluminum conductors. It supports either single-core or multicore configurations, with stranded or solid conductor types based on the cable in use.

Q: Is this product tested for flame retardance and environmental safety compliance?

A: Yes, the coupler is flame retardant as tested to IEC standards and conforms to RoHS compliance, ensuring it is environmentally safe for use in diverse installation conditions.

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Heat Shrinkable Coupler

Heat Shrinkable Coupler Specification

About Heat Shrinkable Coupler

Features & benefits :

SELECTION CHART

TECHNICAL SPECIFICATION

FAQs of Heat Shrinkable Coupler:

Q: How is the Heat Shrinkable Coupler installed on power and control cables?

Q: What are the main benefits of using this heat shrinkable coupler for electrical connections?

Q: Where can the heat shrinkable coupler be used?

Q: When should a coupler with a 3:1 vs. 4:1 shrink ratio be chosen?

Q: What types of cables and conductor materials are compatible with this product?

Q: Is this product tested for flame retardance and environmental safety compliance?

More Products in Catholic Protection Products Category

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PreInsulated Pipe Sealing Cap

U Bolt Coating

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