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4:1 Polyolefin Heatshrink Tubing

Highest Ratio Heatshrink for The Tightest Fit


4:1 heatshrink beauty
4:1 Polyolefin Heatshrink

Our 4:1 over-expanded flexible, flame retardant heat shrinkable polyolefin tubing is used for special circumstances such as jacket retrofitting or repair and electrical insulation of wire assemblies with oversize components or connectors.

The over-expanded product configuration easily fits over the end of a connector, and shrinks down to 25% of its original diameter to fit snugly over the wires. Available in Black only.

ShrinkFlex 4:1 heatshrink tubing is RoHS compliant.


  • Shrinks to 1/4 Original Diameter
  • RoHS Compliant
  • Resists Damage From Common Chemicals

Nominal Diameters

h4n0.50bk
H4N0.50BK

Shrinkflex® Polyolefin Heatshrink Tubing - 4/1 - 12mm 1/2" - Black

Price/Ft: $3.80
Price/Ft: $3.80
Total: $3.80
h4n0.75bk
H4N0.75BK

Shrinkflex® Polyolefin Heatshrink Tubing - 4/1 - 19mm 3/4" - Black

Price/Ft: $5.60
Price/Ft: $5.60
Total: $5.60
h4n1.00bk
Price/Ft: $8.00
Total: $24.00
h4n1.25bk
Price/Ft: $10.50
Total: $31.50
h4n1.50bk
Price/Ft: $11.50
Total: $34.50