PEEKshrink^™ provides a “shrink-to-fit” layer of protection for sensitive or critical components used in a variety of applications such as medical devices, electronics, telecommunications hardware, and oil exploration equipment. The polymer’s inherent purity, lubricity, and toughness also make it an ideal choice for analytical and life sciences applications. End users, too, in industries ranging from automotive to medical devices are finding PEEKshrink^™ to be an ideal material solution.

An alternative to traditional protective coatings, PEEKshrink^™ is ideally suited for challenging environments where extreme heat or cold, intense pressure, chemicals, water, or dielectric interference pose a threat to wires and electrical components. When shrunk onto components, PEEKshrink^™ forms an impenetrable “second skin” that is impervious to contaminants thus preserving the integrity and performance of whatever is inside.

Zeus’ experience with PEEK in terms of material modification and extrusion has enabled us to elevate several key performance attributes of PEEKshrink^™. These improvements provide design engineers with more options of standard as well as customized sizes, tolerances, and shrink ratios for a range of projects. Let us show you what Zeus PEEKshrink^™ can do for you.

Technical Notes
Shrink results can be achieved with multiple heat shrink systems including onfrared IR oven, convection over, or heat gun. Zeus PEEKshrink^™ is available with heat shrink ratios up to 1.4:1 and with expanded inside diameters (ID) up to 2.0″ (50.8mm). We can also provide custom colors to facilitate identification. Our PEEKshrink^™ is available in cut lengths or continuous spooled lengths.

At Zeus, we are here to assist you in developing custom heat shrink systems and processes. For more information, contact us or call 1-800-526-3842 toll-free in the US or +1-803-268-9500 internationally.

PEEKshrink^™ Heat Shrink Recovery Procedures

1. Always assure good ventilation in the immediate work area prior to beginning the heat shrink process. Caution: Fumes may cause nausea and dizziness.
2. PEEKshrink^™ recovers at or near 650 °F ± 50 °F (343 °C ± 10 °C), which is close to PEEK’s melting temperature. This is a liberal and safe range.
   Please note: The heat shrink temperatures listed here are general guidelines. Actual shrink temperatures may be higher or lower depending on the design and dimensions of the heat shrink, application techniques and other factors.
3. The mandrel (part) to be covered by PEEKshrink^™ must be able to withstand this range of temperature.
4. The mandrel being covered may act as a heat sink – not allowing enough thermal energy to be transferred to the PEEKshrink^™ before it has a chance to recover completely and smoothly. Therefore, Zeus recommends preheating large diameter mandrels.
5. PEEKshrink^™ needs to be allowed a fair degree of recovery. Highly restricted radical recovery tends to induce longitudinal loss, while excessive restriction tends to induce splitting.
6. Even heating and cooling of all sides provides the best results. Uneven heating or cooling tends to wrinkle or split the material if not uniformly heated.
   Note: PEEKshrink^™ may recover and have a translucent appearance or be more opaque in appearance. This depends on the crystallinity achieved during shrinking due to varying temperatures and cooling rate of the material post recovery. Color differences should not affect the insulation properties of the material.

Ovens are the most reliable way to recover heat shrink products due to their ability to ensure even heating and reduce the risk of overheating the material (which can lead to brittleness and cracking). However, heat guns can also be used successfully to recover heat shrink material.

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