Self-Winding Textile Sleeve
Self-Winding Textile Sleeve is a spiral-wrapping polyester textile for NEV wire harnesses and fuel lines. The fabric is heat-set with a curl, so it winds itself around the bundle and holds closed without fasteners; pull the edges apart and it opens again for rework. Catalogued range is -40 °C to +190 °C pending verification, in black and orange, sizes 003–038 with coverage from 19% to 44%. Send the bundle diameter and coverage target and we return the size.
Specification
| Material | Polyester textile, spiral self-winding construction |
|---|---|
| Operating temperature | -40 °C to +190 °C catalogued; pending verification |
| Shrink ratio | Non-shrink (spiral self-winding) |
| Wall type | Spiral wrap with heat-set curl |
| Colors | Black / orange |
| Standards | RoHS, REACH : scope pending confirmation |
| Size range | Sizes 003–038; catalogued coverage 19%–44% |
| Electrical function | None : mechanical wrap only |
How the self-winding mechanism works
The fabric is woven flat, then heat-set so the yarns carry a permanent curl. Released around a bundle, the wrap rolls itself into a spiral and its edges lap over; the set in the yarns presses the lap shut, so no adhesive, tape or clips are needed. Because the closure is the material's own spring, the wrap opens where you pull it and closes again where you let go; it is installed anywhere on a finished run and re-opened for rework without cutting anything off. What the catalogued coverage percentage measures, that is, overlapped area, open gap between turns or another manufacturing metric, has not been confirmed at source, so this page states the figure as catalogued without dressing it up. The trade it tracks is nonetheless practical: higher coverage shields more against abrasion and sits stiffer on the bundle; lower coverage breathes more and saves weight, which is why the figure matters in NEV pack routing.
Where Self-Winding Textile Sleeve is used
Primary applications: NEV wire harness and fuel lines. Runs wrapped after assembly, where the wrap must serve breakouts along the route and come off again at rework stations without destroying the sleeve.
How to select the right size
Sizing follows the bundle and the service plan:
- Bundle OD. Match the size to the finished bundle; sizes 003–038 span small signal runs to main pack cables. The per-size OD band is in the pending size table.
- Coverage target. State whether abrasion shielding or ventilation and weight lead the design; the coverage figure moves with size choice, and its definition is pending written confirmation.
- Branch exits. Note where branches leave the run : the spiral opens at the breakout and closes behind it, but the size must pass the largest junction.
- Colour. Orange marks HV circuits in NEV practice; black is the standard LV colour. Colour supports identification and is not a substitute for labelling.
- Environment. Confirm fluids and local temperature against the catalogued range : the -40/+190 °C figure is pending verification, so quote the duty before specifying.
Common Failure Modes & How to Prevent Them
These are the issues most often seen when installing or specifying Self-Winding Textile Sleeve, with the root cause and the prevention or fix for each.
The spiral dragged open along the run
Root cause: The size was too large for the bundle, so the curl had no lap pressure and the spiral unwound under its own stiffness.
Fix: Size down to the finished bundle so the heat-set curl laps with pressure. Where the run is stiff or straight, anchor the start of the wrap with a tie and let the curl hold the rest.
The coverage figure in the drawing didn't match the delivered sleeve
Root cause: The catalogued percentage was read as an overlap area without its definition being confirmed; the delivered figure measured something else.
Fix: Get the coverage definition in writing with the size table before it enters a drawing. Specified and verified, the figure holds; assumed, it drifts.
The wrap cut through at a panel edge
Root cause: A single textile layer over a sharp panel edge concentrates the rub at the contact line and wears through.
Fix: Route clear of edges, add a grommet or pad at fixed rub points, and specify a denser coverage grade where the route passes a known edge.
Branches were forced through the spiral
Root cause: Breakouts were pushed through the wrap wall instead of opening the spiral at that point, distorting the turns.
Fix: Open the wrap at the breakout, seat the branch, let it close behind. Over loaded junctions, add a short length of larger wrap so the spiral is not dragged open.
It was counted on as insulation or a shield
Root cause: The wrapped bundle looked finished and was read as a dielectric or an EMI shield. The wrap is a textile spiral with neither function.
Fix: Keep the conductor's insulation as the electrical barrier and treat the wrap as mechanical protection. Shielding duty needs a construction with a conductive layer, bonded to ground.
Frequently asked questions
What does the stated coverage percentage mean?
As catalogued, coverage runs from 19% to 44% depending on size. Whether that figure measures overlapped fabric area, open gap between spiral turns, or another manufacturing metric has not been confirmed at source, so we do not dress it up as one or the other. Practically, the trade it tracks is real: more coverage means more abrasion shield and less ventilation and flexibility; less coverage is the reverse. Ask for the definition in writing with the size table before you build it into a drawing.
How does self-winding construction stay closed?
The fabric is woven and then heat-set with a curl: released, the textile rolls itself into a spiral tube and its edges lap over, and the set in the yarns keeps the lap under spring pressure. No adhesive, tape or clips are involved. The same set works in reverse: pull the edges apart and the wrap opens for service, then closes again when released.
When is this preferable to hook-and-loop sleeving?
When the wrap goes on once and stays: the self-winding curl has no fastener to pick open, no mating strip to load with lint, and a slimmer profile on the bundle. Hook-and-loop sleeving wins where the run is opened routinely and quickly by hand. Both re-open without cutting; the difference is service rhythm and profile.
What does the 190 °C catalogued ceiling rest on?
That is the catalogued figure and it is pending verification. We are not publishing it as a verified continuous rating until the source test data is confirmed. Near engine, exhaust or pack hotspots, send the local temperature and duty and we confirm the applicable limit before you specify.
How does a branch exit the wrap?
Open the spiral at the breakout point, seat the branch through, and let the wrap close again behind it: the construction serves breakouts anywhere along the run without cutting. On branches that carry load or movement, a short length of larger wrap over the junction keeps the spiral from being dragged open.
What is it over — insulation or bare wire?
Over insulated wire, always. The wrap is mechanical protection against abrasion and noise for NEV harness and fuel-line runs; it is not a dielectric and adds no shielding. The conductor's own insulation stays the electrical barrier underneath.
Request a quote for Self-Winding Textile Sleeve
Send the bundle OD, coverage target, colour and duty. We return the size, the confirmed coverage definition, the verified temperature limit and lead time.
Certifications & Compliance
RoHS and REACH are listed for this product as catalogued; the scope of each declaration (which documents cover this specific sleeve) is pending confirmation. Certificates are supplied per batch on request.
Tell us your target market (EU / US / Asia) and we align the documentation to your filing.
View our verified UL / SGS / RoHS certificates →
Size range & specification notes
Sizes 003–038 with catalogued coverage 19%–44%; the per-size table and the coverage metric definition will be published once confirmed.