Heat Shrink Sleeve Flame Retardant
Heat Shrink Flame Retardant Halogen Free Low Voltage Tubing GFMW and GFHW are medium wall and heavy wall black tubing. These Tubes are used where high flame retardancy is required.
GFMW tubes are used for environmental protection of low voltage cable termination and insulating the connectors for low voltage straight-through joints/splices rated up to 1.1KV.
GFHW tubes are used for mechanical protection and outer sealing of underground straight-through cable joints/splices up to 36KV.
These tubes are manufactured from high-quality cross-linked polyolefin material and conform to the IEC 60684-3-247 standard.
Features & Benefits
- Optional hot melt adhesive lining for complete environmental protection and insulation.
- Excellent resistance to weathering, UV rays, chemical and solvents.
- Maximum cut length available up to 1500 mm.
- Customized dimensions, thickness, length & colours available on request.
Diagram
Selection Chart
| Code | D Min. (mm) | d Max. (mm) | T ± 10% (mm) |
|---|---|---|---|
| GFMW 10/3 | 10 | 3 | 1.5 |
| GFMW 12/4 | 12 | 4 | 1.8 |
| GFMW 19/6 | 19 | 6 | 2.0 |
| GFMW 27/8 | 27 | 8 | 2.5 |
| GFMW 30/8 | 30 | 8 | 2.6 |
| GFMW 33/10 | 33 | 10 | 2.6 |
| GFMW 40/12 | 40 | 12 | 2.6 |
| GFMW 50/16 | 50 | 16 | 2.6 |
| GFMW 70/22 | 70 | 22 | 2.7 |
| GFMW 90/28 | 90 | 28 | 3.0 |
| GFMW 105/30 | 105 | 30 | 3.0 |
| GFMW 115/34 | 115 | 34 | 3.0 |
| GFMW 130/36 | 130 | 36 | 3.0 |
| GFMW 140/42 | 140 | 42 | 3.0 |
| GFMW 160/50 | 160 | 50 | 3.0 |
| GFMW 180/60 | 180 | 60 | 3.0 |
| GFMW 200/70 | 200 | 70 | 3.3 |
| Code | D Min. (mm) | d Max. (mm) | T ± 10% (mm) |
|---|---|---|---|
| GFHW 12/3 | 12 | 3 | 2.4 |
| GFHW 19/6 | 19 | 6 | 2.5 |
| GFHW 30/8 | 30 | 8 | 3.0 |
| GFHW 43/12 | 43 | 12 | 4.0 |
| GFHW 51/16 | 51 | 16 | 4.0 |
| GFHW 72/22 | 72 | 22 | 4.0 |
| GFHW 85/25 | 85 | 25 | 4.0 |
| GFHW 105/30 | 105 | 30 | 4.0 |
| GFHW 120/36 | 120 | 36 | 4.0 |
| GFHW 140/42 | 140 | 42 | 4.2 |
| GFHW 160/50 | 160 | 50 | 4.3 |
| GFHW 180/55 | 180 | 55 | 4.3 |
| GFHW 200/65 | 200 | 65 | 4.3 |
Technical Specification
| Properties | Value | Standard |
|---|---|---|
| Physical | ||
| Tensile Strength | 11 N/mm² (MPa) (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 |
| Flammability | Self-extinguishing | ASTM D2671 |
| Thermal | ||
| Accelerated Ageing (120°C for 500 Hrs.) | ASTM D2671 | |
| Tensile Strength | 11 N/mm² (MPa) (min.) | ASTM D638 |
| Ultimate Elongation | 300% (min.) | ASTM D638 |
| Low Temperature Flexibility (-40°C for 4 Hrs.) | No Cracking | ASTM D2671 |
| Heat Shock (250°C for 30 Min.) | No Cracking or Flowing | ESI 09-11 |
| Shrink Temperature | 125°C | IEC 216 |
| Continuous Temperature Limit | -40°C to +110°C | IEC 216 |
| Electrical | ||
| Dielectric Strength | 12 KV/mm. (min.) | ASTM D149 |
| Volume Resistivity | 1 x 10¹³ Ohm.cm (min.) | ASTM D257 |
| Dielectric Constant | 5 (max.) | ASTM D150 |
Certificates
FAQs
1. What is a Heat Shrink Shroud?
A Heat Shrink Shroud is a protective sleeve made from cross-linked polymer material that shrinks when heat is applied. It provides insulation, sealing, and mechanical protection for cables, joints, and terminations.
2. How does a Heat Shrink Shroud work?
When heat is applied using a heat gun or torch, the shroud shrinks uniformly and tightly wraps around the cable or joint, creating a secure and sealed covering.
When heat is applied using a heat gun or torch, the shroud shrinks uniformly and tightly wraps around the cable or joint, creating a secure and sealed covering.
3. What material is Heat Shrink Shroud made of?
It is typically made from cross-linked polyolefin material, often containing carbon black for UV resistance and weather protection.
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