- Strand qty / AWG
- 16/30
- Strand style
- Tinned
- Conductor OD
- .045"
- Insulation
- .030"
- Finished OD
- .105"
- Ampacity 30°C
- n/a
- Ampacity 40°C
- n/a
Arctic Ultraflex Blue
Ultraflex wire. Single conductor, 18 AWG to 500 MCM. Rated −67°F to 221°F.Ultraflex wire. Single conductor, 18 AWG to 500 MCM
Approvals and origin
UL RecognizedUL Recognized component
CSA 234608
RoHS compliant
At a glance
- SizesSizes stocked
- 18 AWG to 500 MCM
- TemperatureTemperature
- −67°F to 221°F
- VoltageVoltage
- 600V
- StrandingStranding
- Class K, /30
- UL styleUL style
- AWM 1698
- ColorsStocked colors
- 10, plus custom
Ordinary cable goes stiff in the cold. This does not.
Arctic Ultraflex Blue is a premium-quality multipurpose industrial wire, designed for flexibility and durability in severe conditions (−55°C to 105°C / −67°F to 221°F). Class K copper with abrasion-resistant TPE that withstands oil, gasoline, sunlight, saltwater, acids, and chemicals. UL Recognized as AWM.
- 100% copper conductors. Class K, 30 AWG fine stranding. Absolutely no aluminum.
- Tough, flexible TPE insulation. Resists oil, gasoline, sunlight, saltwater, acids, and chemicals.
- UL Recognized AWM. File E196955. 600 V. Size, ratings, and file printed on the jacket.
Where it goes
Sold as single conductor wire by the foot, or built into the assembly you need.
4 AWG through 4/0 AWG with lugs and eyelets crimped and sealed.
Repeat cut, strip and crimp work to one length.
Sealed terminations for engine bays and exposed runs.
Your print, your colors, your printed legend.
Specifications, every stocked size
Seventeen stocked sizes. Set a current to find the smallest size that carries it, or filter to the range you work in.
Size range
Units
Columns
View
| Stocked colors | Buy | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 18 AWG | 16/30 | Tinned | .045" | .030" | .105" | n/a | n/a | BlackRedBlueWhiteGreenYellowOrangeBrownGray | Shop |
| 16 AWG | 26/30 | Tinned | .057" | .030" | .118" | 26 A | 24 A | BlackRedBlueWhiteGreenYellowOrangeBrownGray | Shop |
| 14 AWG | 41/30 | Tinned | .070" | .030" | .130" | 38 A | 36 A | BlackRedBlueWhiteGreenYellowOrangeBrownGrayPurple | Shop |
| 12 AWG | 65/30 | Tinned | .092" | .030" | .152" ±.005" | 44 A | 41 A | BlackRedBlueWhiteGreenYellowOrangeBrownGrayPurple | Shop |
| 10 AWG | 105/30 | Tinned | .120" | .030" | .180" | 60 A | 56 A | BlackRedBlueWhiteGreenYellowOrangeBrownGray | Shop |
| 8 AWG | 168/30 | Bare | .160" | .045" | .250" ±.010" | 85 A | 81 A | BlackRedBlueWhiteGreen | Shop |
| 6 AWG | 266/30 | Bare | .200" | .060" | .325" ±.010" | 115 A | 106 A | BlackRedBlueWhiteGreenYellowOrangeGreen with Orange Stripe | Shop |
| 4 AWG | 420/30 | Bare | .250" | .060" | .375" ±.010" | 150 A | 142 A | BlackRedBlueWhiteGreenOrangeGreen with Orange Stripe | Shop |
| 2 AWG | 665/30 | Bare | .325" | .060" | .450" ±.010" | 205 A | 193 A | BlackRedBlueWhiteGreenOrangeGreen with Orange Stripe | Shop |
| 1 AWG | 836/30 | Bare | .335" | .080" | .515" ±.015" | 240 A | 223 A | BlackRed | Shop |
| 1/0 AWG | 1045/30 | Bare | .385" | .080" | .550" | 285 A | 264 A | BlackRedBlueOrange | Shop |
| 2/0 AWG | 1330/30 | Bare | .455" | .080" | .620" ±.015" | 325 A | 304 A | BlackRedBlue | Shop |
| 3/0 AWG | 1672/30 | Bare | .480" | .080" | .650" | 380 A | 355 A | BlackRed | Shop |
| 4/0 AWG | 2109/30 | Bare | .550" | .085" | .750" ±.015" | 440 A | 411 A | BlackRedBlue | Shop |
| 250 MCM | 2451/30 | Bare | .685" | .095" | .875" | 495 A | 461 A | Blue | Shop |
| 350 MCM* | 3458/30 | Bare | .820" | .095" | 1.010" | 620 A | 512 A | Blue | Shop |
| 500 MCM | 5054/30 | Bare | .995" | .110" | 1.220" | 760 A | 710 A | Blue | Shop |
- Strand qty / AWG
- 26/30
- Strand style
- Tinned
- Conductor OD
- .057"
- Insulation
- .030"
- Finished OD
- .118"
- Ampacity 30°C
- 26 A
- Ampacity 40°C
- 24 A
- Strand qty / AWG
- 41/30
- Strand style
- Tinned
- Conductor OD
- .070"
- Insulation
- .030"
- Finished OD
- .130"
- Ampacity 30°C
- 38 A
- Ampacity 40°C
- 36 A
- Strand qty / AWG
- 65/30
- Strand style
- Tinned
- Conductor OD
- .092"
- Insulation
- .030"
- Finished OD
- .152" ±.005"
- Ampacity 30°C
- 44 A
- Ampacity 40°C
- 41 A
- Strand qty / AWG
- 105/30
- Strand style
- Tinned
- Conductor OD
- .120"
- Insulation
- .030"
- Finished OD
- .180"
- Ampacity 30°C
- 60 A
- Ampacity 40°C
- 56 A
- Strand qty / AWG
- 168/30
- Strand style
- Bare
- Conductor OD
- .160"
- Insulation
- .045"
- Finished OD
- .250" ±.010"
- Ampacity 30°C
- 85 A
- Ampacity 40°C
- 81 A
- Strand qty / AWG
- 266/30
- Strand style
- Bare
- Conductor OD
- .200"
- Insulation
- .060"
- Finished OD
- .325" ±.010"
- Ampacity 30°C
- 115 A
- Ampacity 40°C
- 106 A
- Strand qty / AWG
- 420/30
- Strand style
- Bare
- Conductor OD
- .250"
- Insulation
- .060"
- Finished OD
- .375" ±.010"
- Ampacity 30°C
- 150 A
- Ampacity 40°C
- 142 A
- Strand qty / AWG
- 665/30
- Strand style
- Bare
- Conductor OD
- .325"
- Insulation
- .060"
- Finished OD
- .450" ±.010"
- Ampacity 30°C
- 205 A
- Ampacity 40°C
- 193 A
- Strand qty / AWG
- 836/30
- Strand style
- Bare
- Conductor OD
- .335"
- Insulation
- .080"
- Finished OD
- .515" ±.015"
- Ampacity 30°C
- 240 A
- Ampacity 40°C
- 223 A
- Strand qty / AWG
- 1045/30
- Strand style
- Bare
- Conductor OD
- .385"
- Insulation
- .080"
- Finished OD
- .550"
- Ampacity 30°C
- 285 A
- Ampacity 40°C
- 264 A
- Strand qty / AWG
- 1330/30
- Strand style
- Bare
- Conductor OD
- .455"
- Insulation
- .080"
- Finished OD
- .620" ±.015"
- Ampacity 30°C
- 325 A
- Ampacity 40°C
- 304 A
- Strand qty / AWG
- 1672/30
- Strand style
- Bare
- Conductor OD
- .480"
- Insulation
- .080"
- Finished OD
- .650"
- Ampacity 30°C
- 380 A
- Ampacity 40°C
- 355 A
- Strand qty / AWG
- 2109/30
- Strand style
- Bare
- Conductor OD
- .550"
- Insulation
- .085"
- Finished OD
- .750" ±.015"
- Ampacity 30°C
- 440 A
- Ampacity 40°C
- 411 A
- Strand qty / AWG
- 2451/30
- Strand style
- Bare
- Conductor OD
- .685"
- Insulation
- .095"
- Finished OD
- .875"
- Ampacity 30°C
- 495 A
- Ampacity 40°C
- 461 A
- Strand qty / AWG
- 3458/30
- Strand style
- Bare
- Conductor OD
- .820"
- Insulation
- .095"
- Finished OD
- 1.010"
- Ampacity 30°C
- 620 A
- Ampacity 40°C
- 512 A
- Strand qty / AWG
- 5054/30
- Strand style
- Bare
- Conductor OD
- .995"
- Insulation
- .110"
- Finished OD
- 1.220"
- Ampacity 30°C
- 760 A
- Ampacity 40°C
- 710 A
350 MCM is occasionally stocked and generally special order; minimums may apply. Ampacities are for a single conductor in free air at the stated ambient, 105°C (221°F) conductor temperature, per NEC table 310-17 adjusted for 105°C, assuming one cable diameter of spacing between adjacent conductors.
Color options
Ten stocked jacket colors, plus custom colors and stripes on a production run. Each color below lists the sizes it is stocked in.
- Black18 AWG to 500 MCM
- Red18 AWG to 500 MCM
- Blue18 AWG to 2 AWG
- White18 AWG to 2 AWG
- Green18 AWG to 2 AWG
- Yellow18 AWG to 10 AWG
- Orange18 AWG to 10 AWG
- Brown18 AWG to 10 AWG
- Gray18 AWG to 10 AWG
- Purple14 AWG and 12 AWG only
- Green with orange stripe8 AWG and 6 AWG only
- Custom color or stripeQuoted per production run
Cold weather flexibility and proven performance
Rated and proven to work in extreme temperature ranges (−67°F to 221°F).
Approvals and rating
What this wire is evaluated to, and what gets printed along the jacket.
UL Recognized AWM Style 1698
Recognized component wire under UL file E196955. The style number identifies the exact construction and rating that was evaluated.
CSA 234608
Certified for Canada and printed on the jacket as TEW 105°C 600V FT1.
RoHS compliant
Free of the substances RoHS restricts, so it can be specified into equipment that has to declare its materials.
−67°F to 221°F
−55°C to 105°C
A 160 degree working window. Oil resistant, VW-1 flame rated, 600V.
Typical legend printed on the wire
E196955 AWM 500MCM OIL RESISTANT 600V VW-1 . . . ARCTIC ULTRAFLEX BLUE® -55°C TO 105°C . . . CSA 234608 TEW 105°C 600V FT1
Documents and resources
Specifications, stranding data and compliance paperwork, all as PDFs. If you need something that is not here, ask us: 8am to 5pm AKST, Monday to Friday.
Properties and specificationsInsulation properties, ratings and construction.Available gauges and Class K specificationsEvery stocked size with strand counts.Catalog and sales sheetProduct sheet.Class K stranding comparison chartClass K against SAE and Class B.Class K DC resistanceResistance per size for voltage drop math.REACH, RoHS, Prop 65 and PFASCompliance documentation, 2026.
Insulation properties
Jacket properties: tensile, elongation, oil, sunlight, and flame.
Scroll the table sideways for all 3 columns
| Properties | Test Method | Performance |
|---|---|---|
| Specific Gravity (±.02) | ASTM D-792 | 1.30 |
| Durometer Shore “A” | (±.02) INST./15 seconds | ASTM D-2240 | 77/65 |
| Tensile Strength (60 mil) | ASTM D-412 | 2000 |
| Elongation (%) | ASTM D-412 | 300 |
| Brittle Point (C) | ASTM D-746 | -55°C |
| Oxygen Index % | ASTM D-2863 | 25.0 |
| Oil Aged 18 Hours @ 121°C | % Retention of Tensiles | UL Standard | 129% |
| Oil Aged 18 Hours @ 121°C | % Retention of Elongation | UL Standard | 72% |
| Air Aged 7 Days @ 136°C | % Retention of Tensiles | ASTM D412-80 | 109% |
| Air Aged 7 Days @ 136°C | % Retention of Elongation | ASTM D412-80 | 100% |
| Oil Aged 7 Days @ 60°C | % Retention of Tensiles | ASTM D412-80 | 124% |
| Oil Aged 7 Days @ 60°C | % Retention of Elongation | ASTM D412-80 | 89% |
| VW-1 Flame Test | UL Standard | Pass |
| Product Cold Bend Test | UL Standard | Pass |
| Voltage Rating | UL Standard | 600 |
Frequently asked questions
If you need something that is not here, ask us: 8am to 5pm AKST, Monday to Friday.
What is Arctic Ultraflex Blue?
Arctic Ultraflex Blue is ultraflex wire: a flexible single conductor, Class K copper, 18 AWG to 500 MCM. Rated -55°C to 105°C (−67°F to 221°F), 600 V, UL Recognized as AWM 1698, file E196955. Polar Wire manufactures it.
Is this flexible single conductor wire?
Yes. Arctic Ultraflex Blue is flexible single conductor wire. Class K copper, one conductor per jacket, 18 AWG to 500 MCM.
What is 4/0 copper wire on this page?
4/0, also written 4/0 AWG and spoken four aught, is a stocked size of Arctic Ultraflex Blue. The row is 2109/30 stranding, ampacity 440 A at 30°C (86°F) and 411 A at 40°C (104°F), stocked colors Black, Red, Blue. Jump to 4/0 AWG.
How much does Arctic Ultraflex Blue cost?
Typical cut-to-length price on the online store is $1.25 to $33 per foot, depending on gauge. 8 AWG sits at the low end of the cut SKUs. 500 MCM sits at the high end. 100 ft rolls are also on the online store. Those cost more as a put-up, not as a different per-foot product. See the store for today's price: Arctic Ultraflex Blue wire.
What is AWM and what does it mean?
AWM stands for Appliance Wiring Material, a UL program. Printing AWM on the jacket means the wire was evaluated to a specific style for internal wiring, and that it met the safety and performance requirements of that style. AWM covers thousands of styles and applications. Arctic Ultraflex Blue is UL Recognized as AWM Style 1698, file E196955.
What is "100% Copper Class K Stranding" and why do you use it in your wire?
100% copper, not copper-clad. Class K uses 30 AWG strands bunched into each size. Strand counts by size are in the Class K stranding comparison chart.
Is Arctic Ultraflex Blue® tin-plated?
18 AWG to 10 AWG Arctic Ultraflex Blue is stocked tin-plated for corrosion resistance. Larger sizes are stocked bare. Tin-plated constructions in those larger sizes may be available as a special order. Minimums apply. Private label wire manufacturing.
Can Arctic Ultraflex Blue® be used in marine applications?
Yes. Many marine customers specify Arctic Ultraflex Blue for cold-weather flexibility and a construction that is easy to pull and terminate. It is arctic-grade and UL Recognized as AWM for general internal equipment wiring. For inspected vessels and marine-code applications, use boat-cable-rated Multi-Listed Flexible Wire. For multiconductor marine runs, Premium Boat Cable is available in round and flat.
Why is Arctic Ultraflex Blue®/Arctic Superflex Blue® more expensive than other wire?
Arctic Ultraflex Blue and Arctic Superflex Blue are built as premium products.
TPE insulation. A thermoplastic elastomer blend that stays flexible in cold weather and holds up to oil, abrasion and sunlight.
Class K stranding. Conductors are 100% copper in a 30 AWG Class K construction. 4/0 AWG has over 2000 strands.
Buy it, or have it quoted
Cut lengths and spools are on the online store. Reel quantities, custom colors and stripes, printed legends and finished assemblies are quoted from here.