Cut Sheet

4:1 Heat Shrink Tubing
sizes and dimensions
size selection for heat shrink tubing
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WW-WASP08
11/2011
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For more information
Generally, the largest tube that shrinks down tightly onto an object should be chosen. This allows the heat shrink tubing maximum
stress relief and will yield the longest service life.
Example:
A multi-conductor cable needs to be covered with HSTT4A 4:1 heat shrink tubing. The area to be covered has a measured
outside diameter of 0.500" (12.7mm). Based on expanded and recovered ID attributes, the following three part numbers are
possible options.
The optimal choice is HSTT4A125-48-5 since the tube will recover more than HSTT4A62-48-5 and HSTT4A94-48-5. While the
HSTT4A62-48-5 and HSTT4A94-48-5 will fit over the 0.500" (12.7mm) outside diameter, the recovered I.D. is smaller than
that of the HSTT4A125-48-5. In general, heat shrink should recover at least 10% – 20% to reduce stress and yield the longest
service life.
Part Number
Expanded I.D.
In. (mm)
Recovered I.D.
In. (mm)
HSTT4A62-48-5 0.630 (16.0) 0.158 (4.0)
HSTT4A94-48-5 0.945 (24.0) 0.236 (6.0)
HSTT4A125-48-5 1.26 (32.0) 0.315 (8.0)
Part Number
Nominal
Diameter
Min. Expanded
I.D.
Max. Recovered
I.D.
Nominal
Recovered
Wall Thickness Length
In. mm In. mm In. mm In. mm Ft. m
HSTT4A15-48-Q .158 4.0 .158 4.0 .039 1.0 .043 1.10 4.00 1.2
HSTT4A31-48-Q .315 8.0 .315 8.0 .079 2.0 .043 1.10 4.00 1.2
HSTT4A47-48-Q .472 12.0 .472 12.0 .118 3.0 .055 1.40 4.00 1.2
HSTT4A62-48-5 .630 16.0 .630 16.0 .158 4.0 .070 1.80 4.00 1.2
HSTT4A94-48-5 .945 24.0 .945 24.0 .236 6.0 .088 2.25 4.00 1.2
HSTT4A125-48-5 1.260 32.0 1.260 32.0 .315 8.0 .100 2.54 4.00 1.2
HSTT4A200-48-5 2.050 52.0 2.050 52.0 .512 13.0 .100 2.54 4.00 1.2