Heat Shrink Tubes, Low Voltage Tubes, Heat Shrink

Heat Shrinkable Tubes/Heat Shrink Sleeves

Medium / Heavy Wall Tubes - Insultube Commercial

Low Voltage Tubes, Heat Shrink Tubes, Insultube

Insultube is Heat shrink Medium & Heavy wall tubing.
Medium wall tubes (GMW) are used for environmental protection of low voltage cable termination and insulating the connectors for low voltage straight through joints / splice rated upto 3.3kV. Heavy wall tubes (GHW) are used for mechanical protection and outer sealing of underground straight through cable joints / splice upto 36kV.
These tubes are manufactured from high quality cross inked polyolefin material.

Optional hot melt adhesive for complete environmental protection and insulation, according to IP 68 (Ingress Protection.)
Conforms to IEC 60684-3-247 standard.
Halogen Free.
Excellent resistance to weathering, UV rays, chemical and solvents.
Custom dimensions, thickness, length & colours available on request.
Maximum cut length available - 1200 mm. for GMW / GHW series.

Heat Shrink, Heat Shrink Tubings, Insultube

Heat Shrinkable tubes, Heat Shrink Tubes, Insultube

Technical Qualification Report : QR 1013

SELECTION CHART

All dimensions are in mm

Code
D Min. (mm)
d Max. (mm)
T±10% (mm)

GMW 10/3
10
3
1.5

GMW 12/4
12
4
1.8

GMW 16/5*
16
5
2.0

GMW 19/6
19
6
2.0

GMW 22/6
22
6
2.3

GMW 25/8
25
8
2.5

GMW 30/8
30
8
2.6

GMW 33/10*
33
10
2.6

GMW 40/12
40
12
2.7

GMW 50/16
50
16
2.7

GMW 65/19*
65
19
2.7

GMW 70/22*
70
22
2.7

GMW 75/22
75
22
2.7

GMW 95/25*
95
25
3.0

GMW 105/30
105
30
3.0

GMW 115/34
115
34
3.2

GMW 130/36
130
36
3.2

GMW 130/36
130
36
3.2

GMW 140/42
140
42
3.2

GMW 160/50
160
50
3.3

GMW 180/55
180
60
3.3

GMW 200/60
200
60
3.5

GMW 250/70
250
70
3.5

GMW 320/90
320
90
3.5

GMW 375/110
375
110
3.5

Code
D Min. (mm)
d Max. (mm)
T±10% (mm)

GHW 12/3
12
3
2.4

GHW 19/6
19
6
2.5

GHW 22/6
22
6
2.7

GHW 25/8
25
8
2.8

GHW 30/8
30
8
3.0

GHW 33/10*
33
10
3.0

GHW 40/12
40
12
4.0

GHW 50/16*
50
16
4.0

GHW 65/19*
65
19
4.0

GHW 70/22*
70
22
4.0

GHW 75/22
75
22
4.0

GHW 95/25*
95
25
4.0

GHW 105/30
105
30
4.0

GHW 115/34*
115
34
4.0

GHW 130/36*
130
36
4.0

GHW 140/42
140
42
4.2

GHW 160/50
160
50
4.3

GHW 180/55
180
55
4.3

GHW 200/60
200
60
4.3

GHW 250/70
250
70
4.3

GHW 320/90
320
90
4.5

GHW 375/110
375
110
4.5

GHW 425/120
425
120
4.5

TECHNICAL SPECIFICATION

Properties	Value	Standard
Physical
Tensile Strength	12 N/mm² (MPA)(min.)	ASTM D638
Ultimate Elongation	350% (Min.)	ASTM D638
Longitudinal Change	-10% (Max.)	ASTM D2671
Density	1.0 ± 0.2 gm/cm³	ASTM D792
Hardness	45 ± 10 Shore D	ASTM D2240
Water Absorption	0.5 % (max.)	ASTM D570
Thermal
Accelerated Ageing	(150^oC for 168 hrs.)	ASTM D2671
Tensile Strength	12 N/mm² (Mpa) (min.)	ASTM D 638
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	12 KV/mm. (Min.)	ASTM D149
Volume Resistivity	1 x 10¹² Ohm.cm(min.)	ASTM D257
Dielectric Constant	5 (Max.)	ASTM D150
Weathering: The material from which Medium and Heavy wall tubings are manufactured contains carbon black to protect it from UV light.

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