Choosing the Right Heat Shrink Tube

3/6 3. 0Which Heat Shrink Suits You? Insulation Choosing the Right Heat shrink Tube The 80:20 rule means that a heat shrink tube should shrink by a maximum of 80% and a minimum of 20%. For example: A cable with a diameter of 5 mm is to be wrapped in... More

3/6
3.
0Which Heat Shrink Suits You?
Insulation
Choosing the Right Heat shrink Tube
The 80:20 rule means that a heat shrink tube should
shrink by a maximum of 80% and a minimum of 20%.

For example:
A cable with a diameter of 5 mm is to be wrapped in
heatshrink tubing.
In theory both sizes 6/2 and 12/4
would be suitable, since the required diameter of 5 mm
lies within the shrink range of both tube sizes.

Size 6/2
Maximum shrink (100%)
Maximum shrinkage = 4 mm
Optimum shrinkage max.
(80%)
Shrinkage of 3.
2 mm
Optimum shrinkage min.
(20%)
Shrinkage of 0.
8 mm
Size 6/2 has a range of application of between 2.
8 mm
and 5.
2 mm and is therefore suitable for the cable
diameter of 5 mm.

Size 12/4
Maximum shrink (100%)
Maximum shrinkage = 8 mm
Optimum shrinkage max.
(80%)
Shrinkage of 6.
4 mm
Optimum shrinkage min.
(20%)
Shrinkage of 1.
6 mm
The smallest application diameter of size 12/4 is 5.
6 mm.

This size is therefore unsuitable for a cable diameter of
5 mm.

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