Teflon Tube for Automotive and High-Temperature Cable
PTFE sleeving for engine-bay and powertrain wiring. Engine-bay and powertrain wiring runs hot and against fluids. PTFE sleeving protects it across the temperature range without hardening. We supply cut-to-length and spooled PTFE sleeving matched to the wire gauge and routing. Yes. PTFE resists oil, fuel and most fluids at engine temperatures. We confirm the specific fluid if needed. Pure and fille
PTFE sleeving for engine-bay and powertrain wiring. Engine-bay and powertrain wiring runs hot and against fluids. PTFE sleeving protects it across the temperature range without hardening. We supply cut-to-length and spooled PTFE sleeving matched to the wire gauge and routing. Yes. PTFE resists oil, fuel and most fluids at engine temperatures. We confirm the specific fluid if needed. Pure and fille
Technical specifications
| Material | PTFE |
| Temperature | Up to +260 degC |
| Use | Engine bay, powertrain |
| Form | Sleeving, cut or spool |
💾 Datasheets & Test Reports
Download the technical data sheet for this product (PDF).
Information required for quotation
| Base tube | Approved material grade, ID, OD, wall and conditioning as per drawing |
| Datums | Drawing datum scheme and measurement reference |
| Key dimensions | Feature positions, depths, pitch and diameters reviewed before quotation |
| Thread / profile | Standard or custom profile, class, depth, engagement and gage method |
| Other features | Holes, slots, steps, chamfers, cuts and marking |
| Acceptance | Tolerances, sampling, gages, FAI and inspection report |
| Order | Prototype and production quantity, packaging and delivery target |
Applications by industry
- Automotive engine-bay high-temperature cable sleeving
- Turbo and exhaust-adjacent harness protection
- Wiring near brakes, manifolds and hot sensors
- EV battery and BLDC motor lead insulation
- Chemical and brake-fluid resistant sleeving
- High-flex, low-friction cable conduit in vehicles
Why PTFE for this application
PTFE survives engine-bay heat and aggressive fluids, stays flexible for routing and adds low friction where a routed harness would otherwise abrade.
Confirm max service temp vs the exact hot spot (turbo/manifold can exceed PTFE soft spot). Stiffness at small bend radius may need oversized tube.
Standards: ISO 6722, SAE J1654, ASTM D3294.
Feature and remaining-wall review
ID/OD sintered to size; CNC turning for ends, slots and holes. PTFE requires sharp tools to avoid chatter. Review feature depth, edge distance and remaining wall against critical geometries. Capability is confirmed on your drawing, not from a blanket tolerance.
Inspection and traceability
We state the control plan with you. Batch traceability links raw material lot to finished part.
- First-article inspection (FAI) per your plan
- In-process dimensional checks at every station
- Batch certificate of conformance (COA) supplied on request
- Lot traceability to incoming material certificate
- Dielectric strength and insulation resistance testing available on request
Related components
PTFE Tubes
Related insulation component from the WELLELE catalog.
Teflon Heat-Shrink Tubing
Related insulation component from the WELLELE catalog.
Silicone-Coated Fiberglass Sleeving
Related insulation component from the WELLELE catalog.
Common questions
Is PTFE chemically inert?
Yes. PTFE resists all common acids, bases, solvents and fuels except molten alkali metals and fluorine at elevated temperature. No post-processing needed for chemical resistance.
What tolerances can you hold on PTFE tubing?
ID/OD ±0.05 mm on standard sizes; tighter tolerances available with grinding. PTFE is sized by sintering, so critical dimensions are best held by finish grinding after forming.
Can PTFE be threaded or machined?
PTFE can be CNC-turned for ends, slots and holes using sharp, low-speed tools to avoid chatter. Threads are best formed by machining rather than rolling.
Do you supply material certification for PTFE?
Yes. Each batch includes a material COA. First-article inspection and dielectric strength testing are available per your specification.
PTFE ok against engine fluids?
Yes. Each batch includes a material COA. First-article inspection and dielectric strength testing are available per your specification.
Engineering Guides & Selection Notes
Related technical articles that help specify this product.
Get pricing for Teflon Tube for Automotive and High-Temperature Cable
Attach the drawing with annual volume. We check the material against your duty and tolerance, verify ID / OD / wall / features, and respond with manufacturability notes and pricing.