Raw material information

Our dual-wall heat shrink tubes are manufactured from two layers of different polymers combined with one another. The outer layer is composed of pure PTFE and the inner layer of high-molecular FEP. During the shrinking process, the outer PTFE layer shrinks at a temperature of about 330 °C (approx. 626° F), whereas the FEP inner layer becomes a semifluid masse. After cooling, a complete dense coating of heat shrink and object is obtained.

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Properties

The perfect connection of both layers prevents the inside from falling out, even when being cut to short pieces. After shrinkage, our dual-wall heat shrink tubes can withstand temperatures from – 200 °C to + 210 °C (- 328 °F to + 410 °F). The sealing after shrinkage is waterproof and withstands aggressive chemicals as well as high and low temperatures.

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Products

• 20 different standard dimensions suitable for objects with a diameter from 0,00 mm to 25,00 mm
• Two different wallthicknesses
• Delivered in standard lengths of 1,22 m, other lengths on request

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Application areas

Our PTFE-FEP dual heat shrink tubes are mainly used for the production of aerial and moisture-proof cable connections

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Remarks

• Standard delivery lengths: 1,22 m (4 ft.)
• Standard color: natural transparent
• Other colors and dimensions on request
• Shrinking temperature: 330 °C +/- 10 °C (626 °F)

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