WesBell Electronics
Alpha FIT 321V Heat Shrink Tubing

Alpha FIT 321V Heat Shrink Tubing

3 to 1 Non Adhesive Irradiated Polyolefin


  • Temperature range -55°C to +125°C
  • 3 to 1 Shrink Ratio
  • 4 foot lengths or spools
  • Colors: Black and White


  • Tensile strength: 1500 psi
  • Ultimate elongation: 200%
  • Longitudinal shrinkage: -5%
  • Specific gravity: 1.35
  • Secant modulus: 2.5 x 10,000 max
  • Flammability: Self extinguishing

Chemical Properties:

  • Corrosive effect: Passes copper stability test
  • Fungus resistant: No growth


  • Low shrink temperature range -90°C
  • Fastest recovery time
  • UL VW-1 and CSA OFT flame retardancy
  • Connectorized cable repair
  • Where substrates are heat sensitive
  • Delicate and intricate electronics
  • Flame retardant requirements
  • Industrial applications
  • XTRA Guard 1 applications

Part Number Minimum I.D. Minimum Recovered I.D. Recovered Wall Thickness
Alpha FIT 321V 3/32 .093" .031" .023"
Alpha FIT 321V 1/8 .125" .042" .023"
Alpha FIT 321V 1/4 .250" .083" .023"
Alpha FIT 321V 3/8 .375" .125" .024"
Alpha FIT 321V 1/2 .500" .166" .024"
Alpha FIT 321V 3/4 .750" .250" .024"
Alpha FIT 321V 1" 1.00" .333" .024"




Alpha FIT 321V Non Adhesive Tubing

Alpha FIT 295 Heat Shrink Tubing

This page focuses on the Alpha FIT 321V heat shrink tubing. It's a 3 to 1 shrinkable tubing manufactured with flame retardant irradiated polyolefin and a temperature range of -55°C to 125°C. It's most commonly used for general purpose protection and repair, where additional shrinage is needed, delicate and intricate electronics, insulation from environment, reduced longitudinal shrinkage and resistance to water, fungus and UV light.

In the manufacturing process FIT 321V heat shrink tubing is used with wire and cable harnesses, cable and connector protection and covering wire and cable splices to be sure that the conductor doesn't get water or damaged. It comes in black and white colors.

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