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MDPC-X Heatshrink 4:1 SMALL (1 meter) - Black


Product Description

This is the next generation of our 4:1 heat-shrink - made in Germany exclusively for MDPC-X of course - replacing the Anthracite heat-shrinks which we offered from 2008 to Q1 2019. It improves what was considered world's best already, with its increased heat resistance, a beautiful smooth matte surface and extreme overexpansion capabilities (for an extreme shrink ratio of > 6:1).

This 4:1 heat-shrink is made for easiest application over SMALL or XTC cable sleeving. The big initial inner diameter (ID) of 7.5 mm gives you total clearance while putting the heatshrink over the sleeving. At initial ID its ultra thin wall (no glue, no dual wall!) has a thickness of only 0.2 mm, ideal for traditional shrink style sleeving techniques with SMALL size cable sleeve on AWG 18 and AWG 17 wires. Shrinking down to one fourth (4:1) of its initial ID, it reaches 1.75 mm, which is needed for AWG 18 and AWG 17 wires.

The true magic of this new generation heat-shrink is the massive overexpansion capability. With a long nosed plier inserted into the heatshrink to widen the inner diameter, you can easily and safely reach an ID of 10.0 mm - a shrink ratio of 6:1! This huge initial ID to minimum ID (still shrinks down to 1.75 mm ID) difference will allow you completely new approaches in a variety of situations.

This heat-shrink has a dielectric strength of 22 kV/mm and an initial shrink temperature (Min) of only 90°C. The constant operating range at temperatures from -60°C to +140°C allows it to be used safely in many environments. Its extremely good short term resistance to fire is especially important for the “shrinkless” melting technique.

Enjoy a class of its own when it comes to heat-shrink.

No compromise – the highest level in heatshrink quality

As with the famous MDPC-X Sleeving, the MDPC heatshrink quality is globally regarded as the best-in-class, since MDPC started in 2007. Instead of beginning to talk about all kind of technical data, test results and specifications, here is what users typically told us about our heatshrinks: "Hello MDPC, I just wanted to tell you that I have used so many different heatshrinks in my professional career, but yours top them all in every aspect."
MDPC just offers what can’t be exceeded in quality; otherwise we would not offer it. While most manufacturers of heatshrinks went the cost-saving route in the last years and the available quality degraded, our quality stayed the same.

What makes a good heatshrink for us?

  • First of all we like ultra-thin walls. It just looks awesome and you can easily over-expand it in order to extend its original diameter even more. MDPC offers the thinnest walls in relation to its corresponding shrink-ration.
  • We love a high shrink-ratio, so one heatshrink-size can be used in many situations easily and effectively. "1:1" would mean that it does not shrink at all. "2:1" means that it shrinks down to 1/2 of its original diameter. "3:1" means that it shrinks to 1/3, "4:1" means that it shrinks down to an amazing 1/4. MDPC offers unusual shrink-rates, which make your work as easy as possible.
  • Absolutely smooth surfaces with a matte appearance is not a very common combination, but MDPC gives this to you.
  • While being ultra-thin, it is important that the heatshrink does not burn so quickly. With this property, it is easy to melt MDPC Sleeve underneath the shrink by applying temperatures of more than 250°C. The very thin walls help you to see when the sleeve melts. You recognize it as soon as the footprint of the sleeving edge underneath the heatshrink turns into a smooth transition.
  • Different colors are very important, so people can color-code their cables and of course support their designs in a beautiful way.

To sum up what MDPC-X heatshrink stands for: Only the best in heatshrink-technology and design is good enough for us. If something could be done better, we have already done it.

How to use heatshrink in combination with MDPC-X sleeve

You either need a heatgun or lighter to shrink the heatshrink. A hair-dryer is not enough to shrink to the minimum diameter. For colored heatshrinks, we recommend to only use a heatgun.
Using a lighter, the best technique is as follows: Only use the lower portion of the flame (the flame should be at least 3 cm long) and move it into the heatshrink and out of it again and again, while twisting the cable & heatshrink from time to time, so you heat it up at different sides.Let the heatshrink completely cool down, before you apply any length-stretching-force onto the MDPC-X Sleeve. Once the heatshrink is cooled down, it turns hard and holds the sleeve in position. If you want to move a cable-end into a connector (i. e. ATX wire into ATX connector), you can heat up the front of the heatshrink, so it gets soft again and adjusts perfectly to the inner shape of a connector. Learn more about using our heatshrink for “melting” techniques in the previous section.

FAQ: How do I over-expand my heatshrink?

Just take a long-nosed plier and put the heatshrink over the closed tips. Then you carefully open the pliers so the heatshrink gets stretched. Reposition the heatshrink so the stretching applies on other areas of the surface too. This avoids that the surface gets too unstable at the over-expanded area. Experiment with these techniques and you will quickly learn what you can do and what not. When you heat up an over-expanded heatshrink, be more careful with the heat application than you usually are. Let it cool down from time to time. Mastering this technique allows you to get the heatshrink over connectors, which are slightly too big for the "regular" heatshrink size.

Technical properties of current generation MDPC heatshrinks

Here are the most important specifications, which might help you in your work with our heatshrinks.

  • The heatshrinks will start to shrink at ~95°C
  • The heatshrinks can be constantly exposed to 160°C
  • For a couple of hours, you can expose the heatshrinks to 240°C without melting or breaking effects
  • No corrosion effects in contact with copper
  • Very low water absorption of only ~0.25%
  • Dielectric strength of 20KV per mm
  • Very good resistance to chemicals, oil, cleaning agents
  • No printings on the heatshrinks

We constantly keep our heatshrinks on top of what's technically possible - today and in the future.

Product Reviews

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  1. Simply the best

    Posted by on Jul 15th 2019

    I used this and tried using my automotive heatshrink. This stuff outperforms by a mile. Shrinks down small and doesn't catch fire when melting the sleeving underneath.