Nordson - Polyester (PET) Heat Shrink Tubing

PET Heat Shrink Tubing is an extremely unique material with impressive characteristics including:

• Ultra-thin wall, ultra-high strength, and high dielectric strength
• Can be recovered at relatively low temperatures
• Axial shrinkage pulls components together
• Can be transformed into custom parts by drawing/shrinking onto a shaped mandrel(conical, square, triangular, etc.)
• Can be “heat-set” so that it is stable up to a rescribed temperature
• Can be printed for shaft marking/indicating

• Braid termination
• Insulation
• Encapsulation, bundling, and strain relief
• Masking for coating procedures
• Micro-hose clamps
• Tube joining (variable stiffness catheters)
• Balloon bonding
• Shaft lamination
• Tipping
• General reflow (RX ports, braided shaft lamination, etc).

Diameter range: 0.006” – 1.5” (0.15 – 38.1 mm)
Wall thickness range: 0.0001” – 0.004” (0.0025 – 0.10 mm)
Shrink ratios: 1.1:1 up to 3:1*
Tight fit is best: 15% gap or less**
Material melt temp: 473°F (245°C)
Recommended hot box range: 300°F to 450°F (149°C to 232°C)
Material Compatibility   
PET releases easily from most common thermoplastics. However, some low-durometer urethanes tend to tack to the PET and may require a resting period (~1hr) or may not be compatible. Run test samples with these materials.
Tensile Strength: Very high tensile strength can be realized (>20,000 PSI)
Electrical Insulation: Good
Surface Finish: Ultra smooth, hard, glossy finish
Color/Clarity: Available in clear and a variety of opaque and transparent colors
Bondability: Can be bonded using a wide range of adhesives (surface treatment recommended)
Flex Fatigue: Very high flex fatigue properties
Biocompatibility: Meets USP Class VI and ISO 10993 requirements
Sterilization: Ethylene Oxide, Gamma Irradiation, E-Beam and Autoclave (repeat autoclaving is not recommended)