Heat Shrink Tubing

Heat shrink tubing in 2:1, 3:1, 4:1 and 6:1 ratios – 211 sizes in polyolefin, dual wall adhesive lined, PTFE, Viton and diesel-resistant grades.

What is in this range

• Polyolefin, 2:1 and 3:1 — the everyday insulating and strain-relief tubing.
• Dual wall adhesive lined, 2:1, 3:1, 4:1 and 6:1 — an inner wall that melts and seals the joint as the tube shrinks.
• PTFE, 2:1 — for high temperature and chemically aggressive service.
• Viton fluoroelastomer, 2:1 — where fuel, oil and solvents are present.
• Diesel resistant, 2:1 — specified around diesel and hydraulic fluid.
• Printable markers — heat shrink marker sleeving and Epson LabelWorks shrink tube cartridges for wire and cable identification.

Why the ratio matters

A higher shrink ratio covers a larger connector or splice from the same starting diameter, which is what makes 4:1 and 6:1 useful over lugs and inline joints where 2:1 will not pass over the body. Sizes are called out either by AWG for the wire being covered or by fractional inch expanded inside diameter.

Specifying it

Temperature rating, wall thickness, shrink temperature and agency approvals differ by grade and are confirmed against the manufacturer data sheet on your quotation. Micro-Ray is an authorized Techflex distributor and supplies this range under Techflex part numbers. Please call for pricing and availability.