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1. Heat Shrinkable Tubing
KEYFORE offers a variety of heat shrinkable tubing products
designed to meet a wide range of temperature ratings and specifications
Available Features:
- Highly Flame Retardant
- 2:1, 2.5:1, 3:1 and 4:1 Shrink Ratios
- Adhesive Lined
- Wide Temperature Range (-75 to +125 Degree C)
- Available on Reels or Cut to Your Length
- UL/CSA Products Available (VW-1)
- CCS
Some Typical Applications:
- Electrical Insulation;
- Physical Protection & Abrasion Resistance;
- Strain Relief;
- Moisture Protection;
- Terminal Insulation
Technical Specification
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No.
|
Test item
|
Test method
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Test device and instrument
|
index
|
|
1
|
Axial shrink ratio %
|
ASTM D2671
|
Constant Temperature Oven, max:300
degree C
|
≤10
|
|
2
|
Tensile strength Mpa
|
ASTM D412,
ISO37
|
Electronic tension tester
|
≥10
|
|
3
|
Elongation at break
|
Electronic tension tester
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≥350%
|
|
4
|
Break down strength kV/mm
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ASTM D149
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0~50kV power frequency test device
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≥20
|
|
5
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Volume resistivity Ω·cm
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ASTM D257
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High-ohmmeter
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≥1x1013
|
|
6
|
Water absorption
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ASTM D570
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Analytical balance device
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≤0.5%
|
|
7
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Low temperature flexibility
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ASTM D2671
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Low temperature control device
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No crack
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|
8
|
Heat shock 200±2 degree C, 4 hours
|
ASTM D2671
|
Constant Temperature Oven, Max: 300
degree C
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No drop or flowing
|
|
9
|
Heat aging
Property: 136 degree C, 168 hours
|
a. Tensile strength Mpa
|
ASTM D2671
ISO 37
|
40IB Humidity Chamber, Electronic
tension tester
|
≥10
|
|
b. Elongation at break
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≥300%
|
|
10
|
Oxygen index
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ASTM D2863
|
Oxygen index tester
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≥27
|
|
--
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For the tubing with adhesive
|
|
|
|
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11
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Adhesive softening point
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ASTM E28
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≥80 degree C
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12
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Adhesive peel strength
(300mm/min at 23 degree C)
-to steel, alum
-to PVC
|
ASTM D1000
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|
≥30pli
≥20pli
|
|
13
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Adhesive Water absorption
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ASTM D570
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≤0.5 %
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1.1.
NHBT-1 Series Tubing (1kV)
NHBT-1 Series tubing has many
different colors to be chosen, such as black, red, yellow, green, white,
transparent and so on.
|
Part No.
|
Before
shrink Diameter (mm)
|
After shrink Diameter (mm)
|
After
shrink Thickness (mm)
|
|
NHBT-1B-1.5/0.75
|
1.5
|
0.75
|
0.2
|
|
NHBT-1B-2.5/1.25
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2.5
|
1.25
|
0.2
|
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NHBT-1B-4/2
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4
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2
|
0.2
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NHBT-1B-5/2.5
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5
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2.25
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0.3
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NHBT-1B-6/3
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6
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3
|
0.3
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NHBT-1B-7/3.5
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7
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3.5
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0.3
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NHBT-1B-8/4
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8
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4
|
0.4
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NHBT-1B-9/4.5
|
9
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4.5
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0.4
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NHBT-1B-10/5
|
10
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5
|
0.4
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NHBT-1B-11/5.5
|
11
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5.5
|
0.4
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NHBT-1B-12/6
|
12
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6
|
0.4
|
|
NHBT-1B-13/6.5
|
13
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6.5
|
0.4
|
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NHBT-1B-14/7
|
14
|
7
|
0.4
|
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NHBT-1B-15/7.5
|
15
|
7.5
|
0.4
|
|
NHBT-1B-16/8
|
16
|
8
|
0.6
|
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NHBT-1B-18/9
|
18
|
9
|
0.6
|
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NHBT-1B-20/10
|
20
|
10
|
0.6
|
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NHBT-1B-22/11
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22
|
11
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0.6
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NHBT-1B-25/12.5
|
25
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12.5
|
0.8
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NHBT-1B-30/15
|
30
|
15
|
0.8
|
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NHBT-1B-35/17.5
|
35
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17.5
|
0.8
|
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NHBT-1B-40/20
|
40
|
20
|
0.8
|
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NHBT-1B-50/25
|
50
|
25
|
0.8
|
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NHBT-1B-60/30
|
60
|
30
|
0.8
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NHBT-1B-70/35
|
70
|
35
|
1.0
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NHBT-1B-80/40
|
80
|
40
|
1.0
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NHBT-1B-90/45
|
90
|
45
|
1.0
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NHBT-1B-100/50
|
100
|
50
|
1.0
|
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NHBT-1B-120/60
|
120
|
60
|
1.0
|
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NHBT-1B-150/75
|
150
|
75
|
1.0
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1.2.
NHBT-10
Series
Tubing (10kV)
 
|
Part No.
|
Before
shrink Diameter (mm)
|
After shrink Diameter (mm)
|
After
shrink Thickness (mm)
|
|
NHBT-10R-30/14
|
30
|
14
|
3.0
|
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NHBT-10R-40/16
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