Demonstration of Dual Wall Heat Shrink Tubing Installation
DWFR Heat Shrink Tubing : Reliable, versatile tubing that insulates and protects
DWFR (dual wall flame retardant) tubing is a dual wall product that meets the stringent flammability requirements of UL VW-1. There are numerous single wall tubing products meeting VW-1, and now TE offers a dual wall product meeting this high level of resistance to flammability. DWFR tubing electrically insulates and mechanically protects while resisting moisture. This tubing is offered in both 3:1 and 4:1 heat shrink ratios, and its inner wall of adhesive bonds to a variety of substrates. This combination of properties allows DWFR tubing to meet a broad range of application requirements.
Overview
DWFR dual wall heat shrink tubing consists of a polyolefin jacket and a thermoplastic inner adhesive wall. With its VW-1 rating, it is unique within the wide variety of dual wall tubing products supplied by TE.
DWFR tubing is easily applied. For low volume requirements, a hot air heating tool, referred to as a heat gun, can be used in either a hand-held or bench-mounted mode. TE offers several different models of heat guns as well as accessories to direct the airflow and reflect the heat.
The tubing is slipped over the wiring or component to which it is to be applied, and the heat is then applied to the tubing. When the DWFR tubing is heated, the adhesive lining melts and flows as the outer jacket shrinks. The tubing is properly installed when the adhesive is seen flowing out each end of the recovered tubing. To support high-volume production requirements, TE offers a broad line of more elaborate heating equipment for applying.
Features
- 3:1 and 4:1 shrink ratio
- Operating temperature from –40°C up to +110°C
- Minimum shrink temperature: +60°C.
- Minimum full recovery temperature: +110°C
- Highly flame-retardant with UL VW-1 flammability rating
Benefits
- Withstands mechanical stress for increased product reliability
- Moisture-resistant seal
- Irradiated polyolefin jacket
- Thermoplastic adhesive inner wall
- Provides excellent electrical insulation
- Medium wall jacket provides mechanical protection from abrasion and bending
- Adhesive liner bonds to a variety of substrate materials, providing protection from moisture ingress
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