SFTW-203 Tubing
3:1 Very Flexible Polyolefin
Data Sheet
Product Description
3 M
of electrical, physical and chemical
properties for a wide variety of industrial
made of very flexible, heat-shrinkable
surface printed.
temperature of 100°C (212°F). T h i s
allows the tubing to shrink rapidly, and
damage to temperature sensitive
23053/5 Class 1, and is UL R e c o g n i z e d
It is rated for continuous operation from
withstands elevated temperatures of
300°C (572°F) for brief periods.
tubing that offers an outstanding balance
and military applications. SFTW-203 is
polyolefin which is mechanically tough,
chemically resistant, and can be easily
engineered to offer a low shrink
minimizes heat exposure and possible
s u b s t r a t e s .
performance requirements of MIL-DTL-
(File No. E48398) for flame retardance.
-55°C (-67°F) to 135°C (275°F), and
Standard Sizes and Dimensions
Note: Dimensions in inches are approximate.
S i z e
1 / 1 6
1 / 8
1 / 4
3 / 8
1 / 2
3 / 4
1
1 1/2
Ordering
™
S F T W-203 tubing has been
S F T W-203 tubing meets the
S F T W-203 is a 3:1 shrink ratio
. 0 5 9
. 11 8
. 2 3 6
. 3 5 4
. 4 7 2
. 7 0 9
. 9 4 5
i n .
1 . 5 3 5
Expanded I.D.
( M i n i m u m )
( 1 2 , 0 )
( 1 8 , 0 )
( 2 4 , 0 )
( 3 9 , 0 )
( m m )
( 6 , 0 )
( 9 , 0 )
( 1 , 5 )
( 3 , 0 )
. 0 2 0
. 0 3 9
. 11 8
. 2 3 6
. 3 1 5
. 5 1 2
i n .
. 0 7 9
. 1 5 7
R e c o v e red I.D.
( M a x i m u m )
( 1 3 , 0 )
( m m )
( 0 , 5 )
( 1 , 0 )
( 2 , 0 )
( 3 , 0 )
( 4 , 0 )
( 6 , 0 )
( 8 , 0 )
Typical Applications
The extra flexibility and low shrink
temperature of SFTW-203 tubing make it
ideal for shrink-fit jacketing and
insulation of flexible wire bundles and
temperature sensitive components. T h e
3:1 shrink ratio makes SFTW-203 the
insulation of choice for end terminations
where the connector body is larger than
the cable and for repair applications
where the tubing must be slid over a
c o n n e c t o r. SFTW-203 can also be used
to insulate an oversized component in
line to the wiring.
Shrink Ratio
S F T W-203 has a 3:1 shrink ratio. W h e n
freely recovered, the tubing will shrink to
33% of its as-supplied internal diameter.
The recovered wall thickness of the
tubing is proportional to the degree of
r e c o v e r y.
i n .
. 0 2 6
. 0 3 0
. 0 3 0
. 0 3 0
. 0 4 5
. 0 1 8
. 0 2 2
. 0 3 9
R e c o v e re d
( N o m i n a l )
T h i c k n e s s
Wall
( 0 , 5 5 )
( 1 , 1 5 )
( 0 , 4 5 )
( 0 , 6 5 )
( 0 , 7 5 )
( 0 , 7 5 )
( 0 , 7 5 )
( 1 , 0 0 )
( m m )
Typical Properties
Applicable Specifications
MIL-DTL-23053/5, Class 1; ULFile E48398;
C S A LR 38227
Tensile Strength
Ultimate Elongation
Longitudinal Change
Heat Aging
Low Temperature Flexibility
F l a m m a b i l i t y
P h y s i c a l
Secant Modulus
Specific Gravity
Heat Shock
Water A b s o r p t i o n
Technical information provided consists of typical product data and
should not be used for specification purposes. Unless otherwise
noted, all tests are performed at room temperature.
(2% elong.)
(4 hrs. @ 250°C)
(168 hrs. @ 158°C)
(4 hrs. @ –55°C)
Self extinguishing
No cracking,
No cracking
or dripping
E l o n g a t i o n
8700 PSI
2600 PSI
Standard Colors
B l a c k .
Standard Packaging
Boxes of four-foot lengths, or larg e
spools. Cut pieces subject to factory
q u o t a t i o n .
Ordering Information
Order SFTW-203 by product name, size
equivalent to expanded inner diameter,
c o l o r, and package type. Always order
the largest size that will shrink-fit snugly
over the item to be covered.
Example: SFTW-203, 1/2", black, 4 ft
l e n g t h s .
f l o w i n g
4 0 0 %
3 5 0 %
0 . 2 %
± 5 %
1 . 2 9
E l e c t r i c a l
Dielectric Strength
Volume Resistivity 1 0
C h e m i c a l
Corrosive eff e c t
Solvent Resistance
Fungus Resistance
Tensile Strength
Dielectric Strength
N o n - c o r r o s i v e
1 5
700 V/mil
400 V/mil
1100 PSI
o h m - c m
I n e r t