High Temperature Wire Manufacturer
TEBAOFLEX is a high temperature wire manufacturer building silicone, PTFE, FEP, PFA, XLPE and fiberglass-braided conductors from 105°C up to a 538°C igniter wire, in 150 V to 60 kV ratings. Ordinary PVC hook-up wire in a furnace bay goes hard, then brittle, then it is a fault report. Pick the insulation by the temperature it actually sees, not the one on the datasheet cover.
- Factory since 2014
- UL · cUL · VDE certified
- 50+ UL AWM styles
- MOQ 50 m
- 2014In production since
- 20,000+ m²Plant area
- 150 000 kmCapacité annuelle
- 20+Countries served
- 30+R&D engineers
MOQ 50 m · free samples (you pay freight) · OEM/ODM print on cable and drum · 10–30 day lead time · 6 month to 1 year warranty · 24/7 engineer support
What counts as a high temperature wire?
A high temperature wire is a conductor whose insulation holds its electrical and mechanical properties above 90°C continuously. In practice the market starts at 105°C and runs to 250°C for hook-up wire, with fiberglass and mica constructions reaching 538°C. The insulation material, not the copper, sets the ceiling.
The failure mode is what matters. PVC does not melt at 120°C — it embrittles. Six months later someone flexes a loom during maintenance, the insulation cracks off in flakes, and you have a phase-to-frame fault nobody can explain. Silicone, fluoropolymers and cross-linked polyolefins are used above 90°C precisely because they age gracefully instead of turning into a shell.
Three numbers decide the specification: continuous conductor temperature, rated voltage, and what the wire is rubbing against. Get those three right and everything else is a stocking question.
The material × temperature × voltage matrix
This is the whole selection problem on one screen. Find the temperature your conductor actually reaches, read across to the voltage you need, and the insulation family is decided. Everything below this table is detail.
| Isolation | Continuous temp | Tension | Typical UL AWM styles | Where it earns its keep |
|---|---|---|---|---|
| XLPE / XLPO cross-linked polyolefin | 90–150°C | 300–600 V | 3320, 3385, 3287, 3266, 3173, 3271, 3321 | Halogen-free panel and switchgear wiring, motor and transformer leads, PV and battery storage |
| EVA ethylene vinyl acetate | −40 to +110°C | 450/750 V | EN 50525 H07G-U / -R / -K | Halogen-free European building and panel wiring where low smoke matters more than heat |
| FEP fluorinated ethylene propylene | 150–200°C | 300–600 V | 1330, 1331, 1332, 1333, 1901 | Tight-radius electronics, sensors, coils, lighting — thin wall, clean chemistry, easy to strip |
| caoutchouc silicone | 105–250°C | 300–1000 V | 3171, 3232, 3243 / 3099, 3113, 3123, 3132, 3133, 3530 / 3135, 3139, 3143, 3367, 3512 / 3253, 30144, 30145 | Anything that has to stay flexible hot: motor leads, oven and lighting looms, appliance internals. Tougher, halogen-free and 1,500 V DC builds: HRD, FRNC and ECSC-HRD |
| Silicone + fiberglass braid | 200°C | 300–600 V | 3122, 3513 | Heat plus abrasion — furnace decks, kiln areas, anywhere the loom drags on steel |
| PTFE polytetrafluoroethylene | 80–250°C | 150–1000 V | 1212, 1213, 1164, 1198, 1180, 1199, 1584, 1815, 1570, 1659, 10393 | Aggressive chemicals, thin wall where space and weight are the constraint, aerospace and instrument looms |
| PFA perfluoroalkoxy | 150–250°C | 150–1000 V | 1858, 1859, 1860, 1709, 1710, 1726, 1727, 10362, 10371 | Electric heaters, thermocouples, gas igniters, medical and semiconductor equipment |
| XLFE irradiation cross-linked fluoroelastomer | 200°C, 3,000 h rated | 1000 VAC / 1500 VDC | ISO 19642-5 (unscreened), ISO 19642-9 (screened) | EV and battery high-voltage harness, 3.0–150 mm² and up to 250 mm² |
| Silicone, high-voltage grade | 150–200°C | 3 kV – 60 kV | 3239, 10475 | HV DC supplies, X-ray and imaging, test equipment, ignition circuits |
| Silicone / fiberglass igniter | up to 538°C conductor | 10 kV – 25 kV DC | industry igniter constructions | Flare stack igniters, burner and furnace ignition, gas turbine light-off |
| Silicone heating wire | 200°C | 300 V | 3590 | Heating elements — resistance built to order, not a power conductor |
Temperature figures are continuous conductor ratings taken from the published UL AWM style data and manufacturer datasheets for each construction. Tell us your style number and we confirm the exact approval scope on our UL file before you order.
High temp hook up wire, by insulation family
Five families cover almost every enquiry that reaches us. The differences are less about the top temperature number and more about how each one behaves when you bend it, rub it, or spill something on it.
Silicone rubber — 105°C to 250°C
The flexible one. Class 5 and Class 6 strandings stay soft at temperature, which is why motor leads and oven looms are almost always silicone. It scuffs easily, so add a fiberglass braid anywhere it can rub. Burns to a non-conductive SiO₂ ash instead of a carbon track. See the silicone hook up wire styles and diameters.
PTFE — up to 250°C
Thin wall, chemically inert, excellent dielectric strength. Where a silicone wire needs 0.8 mm of insulation, PTFE does the job in 0.33 mm — that is how you get a 40-way loom into a connector shell designed for 24. Stiffer than silicone, so mind the bend radius. See the PTFE hook up wire styles and dimensions.
PFA — 150°C to 250°C
Melt-processable cousin of PTFE with the same chemical resistance and a smoother, more uniform wall. Strips and cuts cleanly, which matters when you are terminating hundreds of heater or thermocouple leads. Nickel-plated copper is standard above 200°C. See the PFA hook up wire styles and diameters.
FEP — 150°C to 200°C
The value fluoropolymer. Not as hot as PTFE or PFA, but cheaper, more flexible and available in every colour, so it dominates instrument, sensor and lighting wiring. Transparent grades exist for where you need to see the conductor. See the FEP hook up wire range and dimensions.
XLPE / XLPO — 90°C to 150°C
Cross-linked polyolefin gives you halogen-free, low-smoke performance with real mechanical toughness and a thin wall. The 125°C grades (3266, 3173, 3271) are the default for switchgear, motor windings and photovoltaic or energy-storage strings.
Fiberglass braided — 200°C and above
A silicone core with a coated fiberglass braid over it, in AWG 20 through 400 MCM. The braid takes the abrasion so the silicone does not have to. This is what goes on furnace decks and kiln walkways where a bare silicone wire lasts one shutdown. See the fiberglass braided silicone wire range to 4/0.
UL AWM wire manufacturer: the style index
A UL AWM style number fixes the insulation, the temperature and the voltage in one token, which is why quoting a style is faster and safer than describing a construction in prose. These are the constructions we build, grouped so you can find yours in one pass.
| Style UL AWM | Isolation | Temp | Tension | Notes |
|---|---|---|---|---|
| 1212 / 1213 | PTFE | 80°C / 105°C | 150 V / 600 V | One datasheet family, AWG 36–10 |
| 1164 / 1180 | PTFE | 150°C / 200°C | 300 V | Thin-wall 300 V pair, silver-plated copper |
| 1198 / 1199 | PTFE | 150°C / 200°C | 600 V | Heavy-wall versions of 1164 / 1180 |
| 1584 | PTFE | 250°C | 1000 V | −65°C to +250°C, AWG 32–10, 3000 V test |
| 1815 / 1570 / 1659 / 10393 | PTFE | 250°C | 300 V / 600 V | 1570 is mineral-filled PTFE on nickel-plated copper; 1659 also in multicore |
| 1333 / 1331 | FEP | 150°C | 300 V / 600 V | −80°C to +150°C, tinned copper |
| 1332 / 1330 / 1901 | FEP | 200°C | 300 V / 600 V | The volume FEP styles for instruments and lighting |
| 1858 / 1859 | PFA | 150°C | 300 V / 600 V | Nickel, tin or bare copper conductor |
| 1860 / 1709 / 1710 | PFA | 200°C | 150 V / 300 V / 600 V | Published as one family with 1726 / 1727 / 10362 |
| 1726 / 1727 / 10362 | PFA | 250°C | 300 V / 600 V | Heaters, thermocouples, gas igniters |
| 10371 | PFA | 250°C | 1000 V | Highest voltage in the PFA range |
| 3171 / 3232 / 3243 | Silicone | 105°C | 300 V / 600 V | −60°C to +105°C |
| 3099 / 3113 / 3123 / 3132 / 3133 / 3530 | Silicone | 150°C | 300 V / 600 V | 3530 is published at 150°C or 200°C, 600 V |
| 3135 / 3139 / 3143 / 3367 / 3512 | Silicone | 200°C | 300 V / 600 V | −60°C to +200°C; the workhorse motor-lead group |
| 3253 / 30144 / 30145 | Silicone | 250°C | 300 V – 1000 V | Top of the silicone range |
| 3122 / 3513 | Silicone + fiberglass braid | 200°C | 300 V / 600 V | 3513 runs AWG 20 to 400 MCM (0.5–240 mm²), 6000 V test |
| 3239 | Silicone, HV grade | 150–200°C | 3 / 6 / 10 / 20 / 30 / 40 / 50 / 60 kV | AWG 28–16; wall grows from 0.50 mm at 3 kV to 3.11 mm at 60 kV |
| 3320 / 3385 / 3287 | XLPE | 90°C / 105°C | 300 V / 600 V | Entry-level cross-linked grades |
| 3266 / 3173 / 3271 | XLPE / XLPO | 125°C | 300 V / 600 V | Halogen-free and flame retardant; 3173 is also specified for PV and energy storage |
| 3321 | XLPE | 150°C | 600 V (750 VDC) | Hottest cross-linked polyolefin grade |
| 3590 | Silicone heating wire | 200°C | 300 V | Resistance alloy on a glass-fibre core, 0.5–12,000 Ω to order |
Sources: published UL AWM style data and manufacturer datasheets. We hold UL certificate UL-US-2449012-0 and cUL certificate UL-CA-2437036-0 (report E542560-20241225). Send us the style number and we confirm the approval scope that applies to your order.
200c wire or 250c wire: which do you actually need?
If your conductor sees 180°C, a 200°C wire has almost no headroom left and a 250°C wire costs meaningfully more. Measure the real hot spot, add about 20°C of margin, and buy the class above that number — not the class above the one you were going to buy anyway.
| facteur de décision | 200°C class | 250°C class |
|---|---|---|
| Typical materials | Silicone, FEP, PFA, PTFE, XLFE | PTFE, PFA, silicone (3253 family) |
| Common styles | 1180, 1199, 1330, 1332, 1901, 1710, 3135, 3512, 3122, 3513, 3239 | 1570, 1584, 1659, 1815, 10393, 1727, 10362, 10371, 3253 |
| Placage du conducteur | Tinned copper is usually enough | Nickel-plated copper — tin melts at 232°C |
| Flexibilité | Silicone grades stay very flexible hot | PTFE and PFA are stiffer; plan the bend radius |
| Relative cost | Baseline | Higher, and the plating is a large part of the step |
| Choose it when | Hot spot up to about 175°C and mechanical flex matters more than the last 50°C | Hot spot above 200°C, or the wire lives inside a heater, kiln or igniter assembly |
The plating point catches people out more than anything else on this page. A 250°C insulation over tinned copper is not a 250°C wire — tin melts at 232°C, and you have built a beautifully insulated failure. Above 200°C the conductor gets nickel plating, and much of the price step is that, not the polymer.
Above 10 kV: high-voltage and igniter wire
Once you pass 10 kV the design problem changes. Insulation wall stops being a rounding error and becomes most of the outside diameter, and on igniter circuits the conductor itself can sit at temperatures that would destroy any ordinary polymer.
UL 3239 silicone shows the wall problem plainly: on the same AWG 20 conductor the insulation grows from 0.50 mm at 3 kV to 3.11 mm at 60 kV, taking the overall diameter from 1.91 mm to 7.20 mm. Nothing about the copper changed. If a 60 kV lead will not fit your gland, that is why.
Wall thickness is only the first rung. Above roughly 10 kV the construction itself changes — braiding, screening, then a full seven-layer medium-voltage build — and we set the whole ladder out on our high voltage silicone cable page.
Flare stack and burner igniters go further again. Those constructions are rated to 25 kV DC / 17 kV AC, and the fiberglass-jacketed version carries a maximum conductor temperature of 538°C (1,000°F) — roughly twice what the hottest hook-up wire on this page will tolerate. A fluoropolymer-jacketed version of the same design trades that ceiling down to 250°C in exchange for better cut and abrasion resistance in the open.
3 kV to 60 kV silicone (UL 3239)
HV DC power supplies, X-ray and imaging equipment, test rigs, ignition circuits. AWG 28 to 16, 200°C, wall selected by voltage class.
10 kV ignition wire
Silicone insulated with a fiberglass braid and jacket, for engine, burner and furnace ignition. The standard 7–10 kV build is our câble d’allumage silicone 7–10 kV. For flare stack igniters at 25 kV DC, see flare stack ignition cable. See our Style 3304 and 3573 10 kV ignition wire et le ECS-HT VDE 1.8/3.0 kV version.
25 kV igniter and flare stack wire
25 kV DC / 17 kV AC with a fiberglass or fluoropolymer jacket, up to 538°C conductor temperature, for flare tips, burner igniters and turbine light-off.
High temperature cables we build today
Every product below is in current production with a published datasheet. If your requirement is a UL AWM style that is not yet listed as its own page, send the style number — we build to it and can quote from the matrix above.
SiF Silicone 180 single core
- cuivre étamé souple de classe 5
- −60°C to +180°C silicone
- Halogen free, SiO₂ ash on burn
SIAF/GL fiberglass braided silicone
- Silicone core, glass-fibre braid
- Abrasion protection at temperature
- Panel, oven and luminaire wiring
Intemp 250 BS G210 PFA equipment wire
- PFA over nickel-plated copper
- BS G210 British aerospace lineage
- Instrument and equipment looms
Braidless silicone rubber cable 5 kV
- Single core, no braid
- 200°C continuous
- Transformer and ignition leads
Style 3304 & 3573 ignition wire
- 10 kV silicone rubber insulation
- Fiberglass braid and jacket
- Burner and engine ignition
SiHFC 180 screened silicone
- Multicore with copper braid screen
- 180°C continuous
- Drives, sensors, hot control loops
European designations: the same materials, a different vocabulary
Everything above this point is written in UL AWM style numbers, because that is how North America buys high temperature wire. Europe buys the same materials by type designation — VDE, EN 50525, BS — and a buyer who asks for SiHF is asking for something we also build. This index maps the designations we are asked for most often.
| Désignation | What it is | Where it goes |
|---|---|---|
| SiF | Single core silicone, class 5 flexible tinned copper, −60 °C to +180 °C, halogen free | The European default for hot single-core wiring |
| SIA / SIAF | Silicone insulated with a solid (SIA) or stranded (SIAF) core | Fixed high-temperature wiring |
| H03S-K | Single core unsheathed silicone, 300/300 V, 2 kV test | Ovens, electric cookers and appliance internals |
| SiHF-J | Multicore flexible silicone, 300/500 V | Appliance connection where there is no mechanical stress |
| SiHF-P | Multicore silicone with a galvanised steel wire braid, 300/500 V | The same cable where something will stand on it |
| SiFCuSi | Sélectionné silicone, 300/500 V | Hot wiring that also has an EMC requirement |
| SIAF-GL | Silicone with a fiberglass braid over it | Where the wire rubs, and the VDE counterpart to our UL 3122 / 3513 build |
| 2GTL | Halogen-free single core silicone motor lead, 1.1/1.9 kV up to 13 kV | Transformers, generators and motor windings — the one medium-voltage member of this list |
| H05GG-F | Flexible rubber to EN 50525, 300/500 V | Ordinary duty: appliances, kitchens, portable tools |
| H07G-U / -R / -K | EVA insulated, 450/750 V, in class 1 solid, class 2 stranded and class 5 flexible | Protected internal fixed wiring |
| Tri-homologué H05V2-K / H07V2-K | Heat-resistant, flame-retardant PVC to BS 6231 Type CK | Switchgear, control, relay and instrument panels |
Two of these are worth calling out. 2GTL is the only medium-voltage entry here — if you are wiring a transformer or a generator winding above 1 kV, it is the one to look at, and nothing in the UL style index above goes there. And tri-rated is PVC, not an elastomer; it belongs in this list because it competes for the same panel-wiring position, not because it is a high temperature cable in the sense the rest of this page means.
Working to a European specification and unsure which designation matches the UL style you were quoted? Send both and we will map them — they are frequently not equivalent, and the difference is usually the temperature class or the conductor class rather than the material.
The full range sits in our industrial cable product catalogue.
Application to recommendation
Buyers rarely arrive with a style number. They arrive with a machine. This table maps the applications we quote most often to the construction that survives them.
| Application | What kills ordinary wire there | Recommended construction |
|---|---|---|
| Furnace and kiln area wiring | Radiant heat plus abrasion against steel structure | Fiberglass braided silicone, UL 3122 or 3513, 200°C |
| Electric motor and generator leads | Winding heat with constant flexing at the exit | Class 5 or 6 silicone, UL 3135 / 3512, or SiF 180 |
| Industrial oven and dryer looms | Sustained 150–200°C soak, thermal cycling | Silicone 200°C, or FEP 1330 / 1901 where wall space is tight |
| Electric heater and thermocouple leads | Conductor temperature above 200°C, tin plating melts | PFA 1727 / 10362 on nickel-plated copper, 250°C |
| Semiconductor and chemical plant | Solvent and acid attack, outgassing limits | PTFE 1199 / 1584, or PFA 10371 at 1000 V |
| Switchgear and control panels | Halogen and smoke limits, panel heat rise | XLPE / XLPO 3266 or 3173, 125°C halogen free |
| PV strings and battery energy storage | UV, DC voltage stress, long service life | XLPO UL 3173, or ISO 19642 XLFE for 1500 VDC |
| EV and battery high-voltage harness | 1000 VAC / 1500 VDC in a hot engine bay | XLFE ISO 19642-5 unscreened or -9 screened, 3–150 mm² |
| Flare stack and burner igniters | 25 kV pulses with conductor temperature to 538°C | Fiberglass-jacketed igniter wire, 25 kV DC / 17 kV AC |
| Heating elements and heated surfaces | The wire is the element, not the feed | UL 3590 silicone heating wire, resistance built to order |
How to specify a high temperature wire in five lines
Send us these five things and we can quote without a single follow-up email. Miss one and the quote takes three days longer than it needs to.
1. The real hot spot
Not the ambient, not the cabinet rating. The temperature the conductor reaches at that point in the machine, at full load, in summer. If you have not measured it, say so and we will assume a margin.
2. Voltage and test voltage
Rated working voltage plus any type-test voltage you are held to. On HV grades the test voltage often drives the wall more than the working voltage does.
3. Flex duty
Static loom, occasional maintenance flex, or continuous motion? Class 5 versus Class 6 stranding and silicone versus PTFE turn on this one answer.
4. Mechanical and chemical exposure
Abrasion against steel, oil, solvent, coolant, welding spatter, UV. This decides whether a fiberglass braid or a fluoropolymer jacket goes over the insulation.
5. Approvals you must show
UL AWM style number, cUL, VDE, CE with RoHS and REACH, or a customer specification. Tell us the target and we confirm the scope before you commit.
And one bonus line
Length and packaging. MOQ is 50 m, drums are steel, steel-wooden, wooden or export plastic, and we can print your brand on the cable and the drum.
Standards, certification and testing
We are a factory, not a trading desk, so the test data comes from our own rigs. Eight high-precision testing stations cover the process from incoming copper and compound to finished drum, and every batch is checked before it ships.
UL and cUL
UL certificate UL-US-2449012-0 and cUL certificate UL-CA-2437036-0, both dated 27 December 2024, report E542560-20241225.
VDE
VDE certificate 40060055, dated 28 March 2025. European constructions carry CE with RoHS and REACH compliance.
Trust us is not a test method. Ask for the report on the style you are buying and we will send it with the quotation, not after the order.
Why buy high temperature wire from TEBAOFLEX
We extrude it ourselves
Twelve automated lines cover rubber mixing, extrusion, braided shielding, cabling and packaging in one plant. Nothing is subcontracted out and re-labelled.
We test every batch
Eight testing rigs and full-process QC from incoming material to finished cable, with 30+ engineers behind the specifications.
We build to your style
50+ UL AWM constructions plus VDE, EN and BS designs. OEM and ODM printing on cable and drum, and custom constructions on request.
We ship small first
MOQ 50 m and free samples so you can qualify the wire before committing a production run. Lead time 10 to 30 days, confirmed before order.
Quote a high temperature wire
Send the style number, or just tell us the machine and the hot spot. Our engineers reply with a construction, a datasheet and a price, and if the style you asked for is the wrong one for the job we will say so.
WhatsApp: +86 156 3992 7303
Email: sales@tebaoflexcablegroup.com
MOQ 50 m · free samples · OEM/ODM · 10–30 day lead time · 24/7 engineer support
High temperature wire FAQ
What is the highest temperature wire available?
For hook-up wire, 250°C is the practical ceiling, using PTFE, PFA or the 3253 silicone family. Above that you move into fiberglass and mica constructions: igniter wire with a fiberglass jacket is rated to 538°C (1,000°F) conductor temperature, but it is a specialist ignition product, not a general power conductor.
Is silicone or PTFE better for high temperature wire?
Silicone if it has to stay flexible and take repeated bending; PTFE if it has to be thin, chemically inert or fit a crowded connector. Both reach 250°C in their top grades. Silicone scuffs easily and usually wants a fiberglass braid; PTFE is stiffer and needs a larger bend radius.
What does UL AWM mean on a wire?
AWM stands for Appliance Wiring Material. A UL AWM style number is a recognised construction: it fixes the insulation material, the temperature rating and the voltage rating. Quoting UL 3135 tells a manufacturer far more, far faster, than describing a silicone wire in a sentence.
What is the difference between UL 3132, 3133 and 3135?
All three are silicone insulated. UL 3132 is 150°C at 300 V, UL 3133 is 150°C at 600 V, and UL 3135 is 200°C at 600 V. The insulation wall and the compound grade change with the rating; the conductor can be the same in all three.
Can I use tinned copper in a 250c wire?
No. Tin melts at 232°C, so a 250°C rated insulation over tinned copper will fail at the conductor long before the polymer gives up. Wires rated above 200°C use nickel-plated copper, and that plating is a significant part of the price difference between 200°C and 250°C classes.
What high temp wire should I use for heating elements?
Two different answers. To feed a heating element, use PFA UL 1727 or 10362 at 250°C on nickel-plated copper. To be the heating element, use a resistance heating wire such as UL 3590 — resistance alloy on a glass-fibre core with silicone insulation, built to a resistance value between 0.5 and 12,000 ohms.
Do you supply high temperature wire in AWG or mm²?
Both. UL AWM styles are quoted in AWG, typically AWG 36 through AWG 10 depending on the style, and fiberglass braided silicone runs to 400 MCM. European and IEC constructions are quoted in mm², from 0.5 mm² up to 240 mm² and beyond on request.
How high a voltage can a high temperature wire take?
Silicone UL 3239 is built in voltage classes from 3 kV to 60 kV DC at 200°C, with the insulation wall growing from 0.50 mm to 3.11 mm across that range. Igniter constructions run to 25 kV DC / 17 kV AC. Standard hook-up styles stop at 600 V or 1000 V.
What is your minimum order for high temperature wire?
50 metres. We would rather you qualify a short length on the actual machine than commit to a drum on paper. Free samples are available and you cover only the sample freight; production lead time is 10 to 30 days, confirmed before the order is placed.
Can you manufacture to my own specification?
Yes. OEM and ODM work is routine: your construction, your colours, your brand printed on the cable and the drum. Send a drawing or a competitor datasheet and our engineering team will come back with a construction proposal and a sample plan.
Related cable solutions
- Browse the full TEBAOFLEX industrial cable catalogue
- SiF 180 single core silicone cable specifications
- SIAF/GL silicone cable with fiberglass braid
- Intemp 250 BS G210 PFA equipment wire at 250°C
- All TEBAOFLEX cable solutions by industry
- High voltage silicone cable constructions, 1.8 kV to 125 kV DC
- Project record: a screened silicone HV test cable for a cable test van