Heat-Shrink Tubing
FIT®-321 Heat-Shrink Tubing
3:1 Shrink Ratio, Dual-Wall XLPO, Adhesive Lined
AMS-DTL-23053/4 Class 3
UL 224
CSA 198
• Thicker wall for increased durability
• Water-resistant inner permanent-bonding adhesive
Operating Temperature
• -55°C to +125°C Shrink Temperature
• 110°C min.
• 110°C full recovery Material
• Dual-wall flexible polyolefin with thick-wall adhesive Color
• Black Physical Properties
• Tensile strength: 1500 psi (10.34 N/mm2)
• Elongation: 250% min
• Longitudinal change: +1%/-15%
• Flame retardant
• Shelf life: 3 years at 18°C to 35°C Chemical Properties
• Corrosive effect: none
• Fungus resistance: no growth
• Water absorption: 1.0% max
• Fluid resistance: 900 psi (6.20 N/mm2)
• UV resistant
• Lead free Electrical Properties
• 600 V (UL, CSA)
• Dielectric strength: 300 V/mil (118 kV/cm)
• Volume resistivity: 1012 ohm-cm Availability
See table
The perfect FIT for any need
Need to protect a crimped terminal mechanically or environmentally? Color code wires for easy circuit identification? Make fast, reliable repairs to nicked or worn insulation? Whether your concerns are mechanical strain relief, environmental sealing, or organizing wires, Alpha Wire’s FIT® heat-shrink tubing is ideal for solving many challenges in electrical and electronic wiring.