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Flexible, flame-retardant, high-shrink-ratio polyolefin tubing
 
 
Model 
K-2(3X)
Catogary 
Kaiheng K & S Co.,Ltd→Heat Shrinkable Tubing
 
Introduction
KOSOO K-2(3X)
Flexible, flame-retardant, high-shrink-ratio polyolefin tubing
 
n          Application
KOSOO K-2 (3X) is flexible, flame-retardant, high-shrink-ratio irradiated crosslinking heat-shrinkable modified polyolefin tubing. K-2(3X) has 3:1 shrink ratio which is needed to cover larger size differences like harnesses with installed connectors. It is used for insulation protection, bundling or capsule of wire terminals and components with larger size differences.
 
n          Features/Benefits
·Shrink ratio: 3:1.
·Flexible, highly flame-retardant.
·Excellent physical, chemical and electrical properties and high reliability.
·Abrasion and fluids resistance.
·Free of PCBs, PCPs, polybrominated biphenyls (PBBs), polybrominated biphenyl oxides and ethers (PBBOs, PBBEs and PBDEs) and toxic heavy metal compounds, which are classified as environmentally hazardous substances. Conform to European RoHS environmental directive.
■      Operating Temperature Range
Operating temperature range: -55℃~135℃
Minimum shrink temperature: 70℃
Minimum full recovery temperature: 110℃
 
■      Standards/Approvals
UL224 E214175 125℃ 600V VW-1
CSA C22.2 210475 125℃ 600V VW-1
AMS-DTL-23053/5 class 1 and class 3
 
n          Specification values
 
Property
Requirement
Test method
Typical data
Physical:
Concentricity
70% min.
ASTM D 2671
≥70%
 
Tensile strength
10.4MPa min.
ASTM D 638
≥14.0MPa
 
Elongation
200% min.
ASTM D 638
≥400%
 
Heat shock
250℃, 4hrs
No cracking, dripping or flowing
ASTM D 2671
Pass
 
Low temperature flexibility
-55℃, 4hrs
No cracking
ASTM D 2671
Pass
Aging   175℃,168hrs
 
 
 
Tensile strength after aging
70% of original min.
ASTM D 638
≥90%
Elongation after aging
100% min.
ASTM D 638
≥300%
Electrical:
Dielectric voltage withstand
2500V, 60sec
 no breakdown
UL224
Pass
  Dielectric strength
19.7KV/mm min.
ASTM D 2671
25KV/mm
  Volume resistivity
1014Ω·cm min.
ASTM D 876
≥1014Ω·cm
Chemical:
Corrosion
No corrosion
ASTM D 2671
Pass
 
  Flammability
VW-1
UL224
Pass
■      Product sizes
 

Size(mm)
As supplied(mm)
After recovery(mm)
Standard length
(m/spool))
Inside diameter
Wall thickness
Inside diameter
(max.)
Wall thickness
1.5/0.5
1.8±0.3
0.20±0.05
0.5
0.50±0.10
200
3/1
3.3±0.3
0.20±0.05
1.0
0.60±0.10
200
6/2
6.5±0.3
0.25±0.05
2.0
0.70±0.10
100
9/3
9.5±0.4
0.30±0.06
3.0
0.80±0.15
100
12/4
12.5±0.4
0.30±0.06
4.0
0.85±0.15
100
18/6
18.5±0.5
0.35±0.06
6.0
1.00±0.15
50
24/8
26.0±1.0
0.40±0.10
8.0
1.20±0.20
50
40/13
41.5±1.0
0.45±0.10
13.0
1.25±0.20
50

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