Polyimide Tubing (PI / Kapton Tubing)

Precision thin-wall polyimide tubing for semiconductor probe cards, test sockets and motor insulation. Tight ID/OD, clean cut, high temperature.

Polyimide tubing is the precision end of the polymer-tube range: extremely thin walls, very tight ID/OD control, high temperature capability and excellent dielectric strength. The dominant use is semiconductor test -- probe cards, test sockets and spring-probe assemblies -- where a few tenths of a millimetre of concentric, burr-free tube decides whether a contact seats cleanly and repeatedly.

This is the highest-score line in the plan because advanced packaging keeps pushing probe-test density, and buyers -- probe-card OEMs, test-socket makers, spring-probe and ATE suppliers -- qualify on micro-dimensions and batch consistency, not price. We lead with a micro-capability table and samples, and treat it as a country-pool-first motion into the semiconductor test supply chain rather than a material listing.

Technical specifications

Applications by industry

• Semiconductor probe-card tubing and guides
• Test-socket and spring-probe insulation
• ATE and precision sensor tubing
• Motor and coil winding insulation
• High-temperature wire and component sleeving
• Micro-fluid and analytical instrument tubing

Why polyimide for precision test tubing

For probe-card and test-socket work the tube has to be thin, dimensionally exact and thermally stable, and it has to survive repeated insertion without shedding. Polyimide holds wall and OD tighter than most films, stays stable at temperature, and gives a clean, low-burr cut. Against PTFE it is stiffer and easier to hold a tolerance on; against Nomex or PET it survives higher temperature and holds thinner walls.

Tolerance and concentricity review

Micro tubing lives or dies on concentricity and cut quality. We hold ID/OD to a stated tolerance, control concentricity so the wall is even around the bore, and clean-cut to avoid burrs that would foul a probe. Specify the bore and wall you actually need, not a catalogue size, and we will confirm capability.

Inspection and traceability

We state the control plan with you. Batch traceability links the resin lot to the finished tube and the inspection record.

• ID / OD checked to stated micro-tolerance
• Concentricity controlled on every lot
• Clean-cut, low-burr finish for probe use
• Lot traceability to incoming material certificate
• Dimensional report and sample lot on request

Related components

Common questions