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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
|
No.
|
Test item
|
Test method
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Test device and instrument
|
index
|
|
1
|
Axial shrink ratio %
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ASTM D2671
|
Constant Temperature Oven, max:300
degree C
|
≤10
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2
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Tensile strength Mpa
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ASTM D412,
ISO37
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Electronic tension tester
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≥10
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3
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Elongation at break
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Electronic tension tester
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≥350%
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4
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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
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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
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6
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Water absorption
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ASTM D570
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Analytical balance device
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≤0.5%
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|
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
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Heat shock 200±2 degree C, 4 hours
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ASTM D2671
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Constant Temperature Oven, Max: 300
degree C
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No drop or flowing
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9
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Heat aging
Property: 136 degree C, 168 hours
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a. Tensile strength Mpa
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ASTM D2671
ISO 37
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40IB Humidity Chamber, Electronic
tension tester
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≥10
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b. Elongation at break
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≥300%
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|
10
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Oxygen index
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ASTM D2863
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Oxygen index tester
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≥27
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|
--
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For the tubing with adhesive
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|
|
|
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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
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ASTM D1000
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≥30pli
≥20pli
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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.
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Part No.
|
Before
shrink Diameter (mm)
|
After shrink Diameter (mm)
|
After
shrink Thickness (mm)
|
|
NHBT-1B-1.5/0.75
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1.5
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0.75
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0.2
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NHBT-1B-2.5/1.25
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2.5
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1.25
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0.2
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NHBT-1B-4/2
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4
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2
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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
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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
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0.4
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NHBT-1B-9/4.5
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9
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4.5
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0.4
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NHBT-1B-10/5
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10
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5
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0.4
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NHBT-1B-11/5.5
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11
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5.5
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0.4
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NHBT-1B-12/6
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12
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6
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0.4
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NHBT-1B-13/6.5
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13
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6.5
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0.4
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NHBT-1B-14/7
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14
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7
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0.4
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NHBT-1B-15/7.5
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15
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7.5
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0.4
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NHBT-1B-16/8
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16
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8
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0.6
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NHBT-1B-18/9
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18
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9
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0.6
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NHBT-1B-20/10
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20
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10
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0.6
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NHBT-1B-22/11
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22
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11
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0.6
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NHBT-1B-25/12.5
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25
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12.5
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0.8
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NHBT-1B-30/15
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30
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15
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0.8
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NHBT-1B-35/17.5
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35
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17.5
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0.8
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NHBT-1B-40/20
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40
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20
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0.8
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NHBT-1B-50/25
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50
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25
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0.8
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NHBT-1B-60/30
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60
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30
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0.8
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NHBT-1B-70/35
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70
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35
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1.0
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NHBT-1B-80/40
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80
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40
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1.0
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NHBT-1B-90/45
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90
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45
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1.0
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NHBT-1B-100/50
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100
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50
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1.0
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NHBT-1B-120/60
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120
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60
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1.0
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NHBT-1B-150/75
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150
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75
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1.0
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1.2.
NHBT-10
Series
Tubing (10kV)
 
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Part No.
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Before
shrink Diameter (mm)
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After shrink Diameter (mm)
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After
shrink Thickness (mm)
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NHBT-10R-30/14
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30
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14
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3.0
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NHBT-10R-40/16
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35
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16
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3.0
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NHBT-10R-50/20
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50
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20
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3.0
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NHBT-10R-65/25
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65
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25
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3.0
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NHBT-10R-75/30
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75
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30
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3.0
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NHBT-10R-85/35
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85
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35
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3.0
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NHBT-10R-100/40
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100
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40
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3.0
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NHBT-10R-125/50
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125
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50
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3.0
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NHBT-10R-150/60
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150
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60
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3.0
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NHBT-10R-160/80
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160
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80
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3.0
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NHBT-10R-200/100
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200
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100
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3.0
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1.3.
NHBT-35 Series Tubing (35kV)
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Part No.
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Before
shrink Diameter (mm)
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After shrink Diameter (mm)
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After shrink
Thickness (mm)
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NHBT-35R-30/14
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30
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14
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5.0
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NHBT-35R-40/16
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35
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16
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5.0
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NHBT-35R-50/20
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50
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20
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5.0
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NHBT-35R-65/25
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65
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25
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5.0
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NHBT-35R-75/30
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75
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30
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5.0
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NHBT-35R-85/35
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85
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35
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5.0
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NHBT-35R-100/40
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100
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40
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5.0
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NHBT-35R-125/50
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125
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50
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5.0
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NHBT-35R-150/60
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150
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60
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5.0
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1.4.
NHBT-1B-SB Series Dual-wall
Tubing
This is a kind of high
shrinkable ratio and heavy duty tubing with lined adhesive. The shrinkable ratio
can be selected with 2:1, 3:1
or 4:1 . The quality is guaranteed. We have CCS certificate for ships use.
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Part No.
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Before
shrink Diameter (inch / mm)
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Shrinkable
ratio
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NHBT-1B-SB6.3/2.1
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0.25’/6.4
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3:1
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NHBT-1B-SB9.5/3.2
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0.375’/9.5
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3:1
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NHBT-1B-SB12.6/4.2
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0.5’/12.7
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3:1
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NHBT-1B-SB19/6.3
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0.75’/19
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3:1
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NHBT-1B-SB25/8.3
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1’/25.4
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3:1
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NHBT-1B-SB31/10
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1.2’/31
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3:1
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NHBT-1B-SB33/11
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1.3’/33
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3:1
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NHBT-1B-SB38/12.6
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1.5’/38
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3:1
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NHBT-1B-SB51/17
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2’/51
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3:1
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NHBT-1B-SB63/21
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2.5’/63.5
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3:1
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NHBT-1B-SB69/33
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2.7’/69
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3:1
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NHBT -1B-SB76/25.4
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3’/76
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3:1
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NHBT-1B-SB89/30
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3.5’/89
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3:1
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NHBT-1B-SB101/33.6
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4’/101
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3:1
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NHBT-1B-SB114/38
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4.5’/114
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3:1
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2. Join Covers
KEYFORE provides all kinds of customized join covers based on customer’s
drawing. The
material can be chosen from 1kV, 10kV or 35kV. Usually the join covers are red or
black colored, also many different colors can be selected. The material
technical specification of the join covers is the same as it for tubing
listed as above.
   
Our
join cover products has very attractive price and the quality is
guaranteed. All of these advantages make this product quite valuable to
you.
10kV or 35kV
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Part No.
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Bus-bar size
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NHBT-10R-HI30/30
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30x30
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NHBT-10R-HI40/40
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40x40
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NHBT-10R-HI50/50
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50x50
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NHBT-10R-HI60/60
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60x60
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NHBT-10R-HI70/70
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70x70
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NHBT-10R-HI80/80
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80x80
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NHBT-10R-HI100/100
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100x100
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NHBT-10R-HI120/120
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120x120
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3.
Molded Heat-shrinkable products
3.1. NHBT-1B-JYT-I Series Molded Parts
This is a kind of heavy duty and durable sleeve used in a
very tough environment,
such as on a ship
or a military vehicle
  
|
Part No.
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USA
Part No.
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Before
shrink Diameter
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After shrink Diameter (mm)
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NHBT-1B-JYT-I2
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202K121
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24/24
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10/5.6
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NHBT-1B-JYT-I3
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202K132
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29/29
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14/6.0
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NHBT-1B-JYT-I4
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202K142
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31/31
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18/7.0
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NHBT-1B-JYT-I5
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202K153
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36/36
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22/8.4
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NHBT-1B-JYT-I6
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202K163
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43/43
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28/10.0
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NHBT-1B-JYT-I8
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202K174
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58/58
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35/15.7
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NHBT-1B-JYT-I9
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202K185
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65/65
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44/16.8
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NHBT-1B-JYT-I10
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76/76
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51/19.3
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NHBT-1B-JYT-I11
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88/88
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58/27.2
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Part No.
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ι
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s
|
t
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a 或 b
|
δ
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ι1
|
ι2
|
ι3
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JYT-I2
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38
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3.0
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1.0
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12
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2.0
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29
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3
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6
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JYT-I3
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55
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3.0
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1.0
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12
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2.0
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36
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7
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12
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JYT-I4
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67
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3.0
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1.0
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20
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2.7
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48
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7
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12
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JYT-I5
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80
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3.0
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1.0
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20
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2.7
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55
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9
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16
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JYT-I6
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99
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3.0
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1.0
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20
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3.0
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67
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12
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20
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JYT-I8
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130
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3.0
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1.0
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20
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3.0
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85
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15
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30
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JYT-I9
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170
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3.0
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1.0
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20
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3.5
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125
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15
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30
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JYT-I10
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200
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3.0
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1.0
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30
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3.5
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147
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18
|
35
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JYT-I11
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215
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3.0
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1.0
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30
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3.5
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155
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20
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40
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4. Power Cable Accessories
4.1. NHBT-1B-ZT Series Break Out Sleeve
There are two colors
to be selected, red or black. See the table below for the
products details :
 
|
Part No.
|
Cores
|
Type
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|
Part No.
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Cores
|
Type
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NHBT-1B-ZT-2/0
|
2
cores
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0
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NHBT-1B-ZT-3/4
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3
cores
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4
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NHBT-1B-ZT-2/1
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2
cores
|
1
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NHBT-1B-ZT-4/0
|
4
cores
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0
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NHBT-1B-ZT-2/2
|
2
cores
|
2
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NHBT-1B-ZT-4/1
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4
cores
|
1
|
|
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NHBT-1B-ZT-2/3
|
2
cores
|
3
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NHBT-1B-ZT-4/2
|
4
cores
|
2
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NHBT-1B-ZT-3/00
|
3
cores
|
00
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NHBT-1B-ZT-4/3
|
4
cores
|
3
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NHBT-1B-ZT-3/0
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3 cores
|
0
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NHBT-1B-ZT-5/1
|
5
cores
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1
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NHBT-1B-ZT-3/1
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3 cores
|
1
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NHBT-1B-ZT-5/2
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5 cores
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2
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NHBT-1B-ZT-3/2
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3 cores
|
2
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NHBT-1B-ZT-5/3
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5 cores
|
3
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NHBT-1B-ZT-3/3
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3 cores
|
3
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Type
0
1
2
3
4
Suitable Cable
10-16 25-50
70-120 150-240 300-400
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