Dunbar – 2690NW
3:2 SHRINK RATIO, DUAL-WALL,
POLYOLEFIN TUBING
Applications
GSHS-2690NW
is a heat shrinkable polyolefin tube with a meltable adhesive which flows when
heated. It is specially designed for applications
on automobile brake or fuel or power steering pipes to prevent corrosion of
pipes from attack of oils, water and chemicals and mechanical damage.
Features
H Shrink
ratio: 25% or more in the radial direction, 5% or less in the axial direction
H Continuous operating temperature: - 55°C to 90°C
H Excellent electrical properties
H High resistance to chemicals and oils
Standard
H
LGC Standard
Specification Values
|
Property |
Test Method |
Value |
||
|
Physical |
Unaged |
Tensile
strength |
ASTM
D 638 |
Min.
1.2 kgf/mm2 |
|
Elongation |
Min.
300% |
|||
|
Aged |
Tensile
strength |
90°C/240
hrs |
Min.
1.2 kgf/mm2 |
|
|
Elongation |
Min.
270% |
|||
|
Deformation |
140°C/10
mins |
Max.
40% |
||
|
Heat
shock |
250°C/1
hrs |
No
crack |
||
|
Cold
bend |
-
35°C/1 hrs |
No
crack |
||
|
Flexibility |
158°C/168
hrs |
No
crack |
||
|
Secant
Modulus |
- |
Max.
17.64 kgf/mm2 |
||
|
Electrical |
Dielectric
strength |
- |
Min.
2.5kV/1 minute |
|
|
Volume
resistivity |
- |
Min.
1014W - cm |
||
|
Chemical |
Chemical
resistance |
- |
No
crack |
|
Rev. Jan 2003
Dunbar – 2690NW
3:2 SHRINK RATIO, DUAL-WALL, POLYOLEFIN TUBING
Expanded as
supplied
Fully recovered
after heating
Expanded as
supplied
|
Fully recovered
after heating
|
Product Dimensions Minimum Shrink Temperature: 110°C
Size
|
Expanded
|
Recovered
|
|||||||
Internal
Diameter
Minimum
(D)
|
Internal
Diameter
Maximum
(d)
|
Minimum
Total Wall Thickness (Total Wall) (T) |
Minimum Wall Thickness (Adhesive Wall) (t) |
||||||
|
In. |
mm |
In. |
mm |
In. |
mm |
In. |
mm |
||
Metric
Size
|
|
||||||||
|
6 |
0.2560 |
6.5 |
0.1772 |
4.5 |
0.0394 |
1.0 |
0.0039 |
0.1 |
|
|
8 |
0.3346 |
8.5 |
0.2402 |
6.1 |
0.0394 |
1.0 |
0.0039 |
0.1 |
|
|
9 |
0.3740 |
9.5 |
0.2559 |
6.5 |
0.0394 |
1.0 |
0.0039 |
0.1 |
|
|
11 |
0.4528 |
11.5 |
0.3110 |
7.9 |
0.0433 |
1.1 |
0.0039 |
0.1 |
|
|
13 |
0.5315 |
13.5 |
0.3543 |
9.0 |
0.0433 |
1.1 |
0.0039 |
0.1 |
|
|
15 |
0.5709 |
14.5 |
0.4134 |
10.5 |
0.0472 |
1.2 |
0.0039 |
0.1 |
|
Rev. Jan 2003