RAYCHEM
SCT
Adhesive-lined, semirigid, polyolefin
heat-shrinkable tubing (extended temperature range)
SCT is a high-quality, dual-wall tubing
designed to insulate and seal
automotive wire splices and
components made by ultrasonic
welding, clip-and-dip, or soldering.
Typical applications are insulating and
sealing splices in an under-the-hood
automotive environment.
SCT has a tough outer wall made of
radiation crosslinked, flame-retardant,
semirigid polyolefin. The inner wall is
a unique, specially formulated hot-
melt adhesive designed to function at
an extended temperature range. The
adhesive forms an outstanding barrier
against moisture and automotive fluids.
This barrier provides exceptional
protection against corrosion.
Because SCT has a high shrink ratio,
only a few sizes are needed to cover
a wide range of splice and
component diameters.
Temperature rating
Full recovery temperature:
Continuous operating temperature:
135°C
–40°C to 150°C
Specifications*
Type
SCT
*When ordering, always specify latest issue.
Raychem
SCT SCD
Dimensions (millimeters/inches)
W
Expanded as supplied
D
Fully recovered after heating
d
W1
Inside diameter
D (min.)
Size
SCT No. 0
SCT No. 1
SCT No. 2
SCT No. 3
SCT No. 4
SCT No. 5
Expanded as
supplied
5.1
7.6
9.0
11.6
17.8
27.9
0.200
0.300
0.355
0.455
0.700
1.100
d (max.)
Recovered after
heating
1.3
1.7
2.3
2.5
4.4
8.4
0.050
0.065
0.090
0.100
0.175
0.330
Recovered wall thickness**
W
Total
wall
1.4 ± 0.30
1.52 ± 0.30
1.52 ± 0.30
2.29 ± 0.30
2.54 ± 0.30
2.54 ± 0.30
0.055 ± 0.012
0.060 ± 0.012
0.060 ± 0.012
0.090 ± 0.012
0.100 ± 0.012
0.100 ± 0.012
W1 (min.)
Adhesive
wall
0.76
0.76
0.76
1.40
1.52
1.52
0.030
0.030
0.030
0.055
0.060
0.060
**Wall thickness will be less if tubing recovery is restricted during shrinkage.
Ordering information
Color
Size selection
Standard packaging
Marking
Ordering description
Black
Always order the largest size that will shrink snugly over the component being covered.
Cut pieces. See reverse for information on standard cut lengths.
Tubing will be marked with the number size (for example, SCT-0, SCT-1, SCT-2, SCT-3, SCT-4, SCT-5).
Specify product name, size, and color, and cut length; for example, SCT-No.2-0-50MM (0=Black).
Specification values
Property
Dimensions
Longitudinal change
Tensile strength
Ultimate elongation
Secant modulus (as supplied)
Concentricity (as supplied)
Heat shock
(4 hours at 250°C/482°F)
Dielectric strength (jacket only)
Volume resistivity
Immersion leak resistance
Thermal aging
(1000 hours at 150°C/302°F)
Followed by test for:
Immersion leak resistance
Thermal cycling
25 cycles
(-40°C to 135°C/-40°F to
225°F)
Followed by test for:
Immersion leak resistance
Fluid resistance
(24 hours at 25°C/77°F) in:
ASTM Reference Fuel C
VV-F-800 Diesel Fuel
(24 hours at 100°C/212°F) in:
ASTM #3 Oil
Followed by test for:
Immersion leak resistance
Unit
mm
(inches)
percent
psi
percent
psi
percent
Requirement
See reverse
+0, –10
1500 minimum
300 minimum
35,000 minimum
60 minimum
No cracking, dripping or
flowing of jacket
500 minimum
10
13
minimum
0.25 maximum
Method of test
ASTM D 2671
ASTM D 2671
ASTM D 2671
ASTM D 2671
ASTM D 2671
ASTM D 2671
ASTM D 2671
ASTM D 149
ASTM D 257
See note below
See note below
Physical
Electrical
volts/mil
ohm-cm
microamps
microamps
0.25 maximum
See note below
microamps
0.25 maximum
See note below
Chemical
microamps
0.25 maximum
Note: Consult Raychem SCT SCD for specific details about test procedures.
Standard cut lengths
Part number
SCT No.
0
SCT No. 1
SCT No. 2
SCT No. 3
SCT No. 4
SCT No.
5
Standard cut length
50 mm,
75
mm,
105 mm
1220 mm
27 mm, 50 mm, 65 mm
1220 mm
27 mm, 50 mm, 65 mm
1220 mm
27 mm, 65 mm, 75 mm
1220 mm
27 mm, 75 mm, 90 mm
1220 mm
50
mm,
200
mm
1220 mm
Cut length tolerance
± 1.5 mm
± 25.4 mm
± 1.5 mm
± 25.4 mm
± 1.5 mm
± 25.4 mm
± 1.5 mm
± 25.4 mm
± 1.5 mm
± 25.4 mm
± 1.5 mm
± 25.4 mm
Users should independently evaluate the suitability of the product for their application.
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SCT_DS
APL
6/2016
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dimensions in this catalog are for reference purposes only and are subject to change without notice. All specifications are subject to change without notice. Consult TE for the
latest dimensions and design specifications.