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Product

Hook-up & equipment wiresSAE J1128 TXL · ISO 6722 Class C0 ml Capillary Wicking−40…+125 °C · 22–10 AWG

TXL Anti-Capillary Water-Blocked Automotive WireSAE J1128 TXL 125 °C thin-wall XLPE automotive wire with anti-capillary water block

Longitudinally water-blocked thin-wall automotive wire built to SAE J1128 Type TXL and ISO 6722-1 Class C (−40 °C to +125 °C, 60 V DC), filling the copper strand interstices with a cured elastomer compound that stops capillary water wicking into sealed ECUs.

Oil-resistant
Water-resistant
Ozone, UV & moisture
Approved
Order designation
TXL Anti-Capillary 18 AWG (19/30)
Outer Ø min
1.9 mm
Outer Ø max
2.0 mm
Weight ≈
10 kg/km
Min. bend R
6 mm
Check against my drumAll sizes (7)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Voltage rating
60 V DC / 25V AC
SAE J1128 & ISO 6722-1 low-tension
Temp. rating
−40…+125 °C
ISO 6722-1 Class C (3,000 h at +125 °C)
Water blocking
0 ml wicking
Interstitial cured elastomer seal
Insulation wall
0.40 mm (16 mil)
SAE J1128 TXL thin-wall XLPE
Bending radius
3 × OD
3 × overall diameter harness bend
Size range
22–10 AWG
0.35–5.0 mm² · bare or tinned copper

Typical values for this cable type, based on SAE J1128 Type TXL · ISO 6722-1 Class C (+125 °C) — confirmed in the datasheet and quotation for your order.

Application fit

Is TXL Anti-Capillary right for your machine?

When an engine or chassis cools down after driving through water, vacuum pressure inside sealed ECU housings sucks moisture along the microscopic voids between ordinary copper strands. TXL Anti-Capillary seals those interstitial voids while preserving clean ultrasonic welding and crimping.

Fixed installation

Suitable

Sealed engine ECUs, ABS/ESP wheel-speed pigtails, oxygen/NOx sensors, headlamps and wet-zone harnesses.

VFD inverter to AC motor screened feeder

Not suitable

Unscreened 60 V DC low-tension automotive primary wire.

Use UL 2464 / 2517

Trailing & towing

Not suitable

Automotive vehicle harness wire; for thicker-wall heavy-duty truck harnesses select GXL Anti-Capillary.

Use GXL Anti-Capillary

Energy chain / drag chain

Not suitable

For +180 °C immersion inside automatic transmission fluid (ATF), select EXRAD 180B.

Use EXRAD 180B (+180 °C)
Typical machinesSealed powertrain ECU & body-control harnessesABS / ESP wheel-speed & chassis sensor pigtailsLambda / O2 & exhaust NOx sensor breathability controlWet-zone headlamp, mirror & door-module loomsMarine outboard & powersports engine harnesses

Construction

Layer by layer

Shown: TXL Anti-Capillary 18 AWG (19/30) — 19-strand bare or tinned copper conductor internally sealed with cured interstitial water-blocking elastomer and insulated with a 0.40 mm (16 mil) SAE J1128 TXL electron-beam cross-linked polyethylene (XLPE) wall.

123
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Water-blocked stranded copper19- or 37-strand bare or tinned annealed copper (22–10 AWG) with cured interstitial elastomeric compound sealing all inter-strand capillariesSAE J1128 · ASTM B3 / B33
20.40 mm (16 mil) TXL thin-wall XLPEElectron-beam or chemically cross-linked polyethylene (XLPE) extruded to SAE J1128 Type TXL thin-wall dimensionsSAE J1128 Type TXL · ISO 6722-1 Class C
3Pinch- & fluid-resistant XLPE surfaceSmooth, high-durometer cross-linked surface compatible with standard automotive connector cavity seals (Mat-seal & single-wire seals)SAE J1128 · USCAR-2

TXL Anti-Capillary Bare Copper (22–10 AWG, −40…+125 °C)

Standard bare copper strands with non-corrosive interstitial water block for automated crimp and ultrasonic splice lines

TXL Anti-Capillary Tinned Copper (22–10 AWG, −40…+125 °C)

Tinned copper strands with interstitial water block for severe road-salt, marine outboard and off-highway splash zones

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on SAE J1128 Type TXL · ISO 6722-1 Class C (+125 °C). Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage
60 V DC / 25 V AC (low-tension automotive primary)
Dielectric withstand voltage
1.0 kV AC for 1 min (after water immersion) · 3.0–5.0 kV spark test
Max. DC conductor resistance (20 °C)
22 AWG: ≤ 54.3 Ω/km · 20 AWG: ≤ 34.6 Ω/km · 18 AWG: ≤ 21.8 Ω/km · 16 AWG: ≤ 14.0 Ω/km · 14 AWG: ≤ 8.79 Ω/km · 12 AWG: ≤ 5.56 Ω/km

Thermal

Operating temperature range
−40 °C to +125 °C continuous (ISO 6722-1 Class C, 3,000 hours thermal endurance)
Short-term overload
+150 °C (240 h) · +250 °C short-circuit resist

Mechanical

Nominal insulation wall
22–16 AWG: 0.40 mm (0.016 in) · 14 AWG: 0.40 mm · 12 AWG: 0.46 mm · 10 AWG: 0.50 mm
Anti-capillary pressure test
Zero water/air bubble flow through 100–300 mm wire sample at 10–100 kPa pressure differential
Crimp & ultrasonic splice compatibility
Cured blocking compound stays inside strand interstices without fouling crimp dies or ultrasonic horns

Resistance

Automotive fluids
Passes SAE J1128 / ISO 6722-1 immersion in engine oil, gasoline, diesel, brake fluid, coolant, battery acid and power-steering fluid
Flame & pinch resistance
Passes SAE J1128 45° flame test, scrape abrasion and hot-wire pinch resistance

Reference standards

Primary standard
SAE J1128 Type TXL (Thin-Wall Cross-Linked Polyolefin Insulated)
International & OEM alignment
ISO 6722-1 Class C, Ford ES-AU5T-1A348-AA, GM GMW15626 & Chrysler MS-8288
RoHS, ELV & REACH
2000/53/EC (ELV), 2011/65/EU (RoHS 2) & IMDS registered

Identification

Insulation colours
All SAE / ISO automotive base colours plus dual longitudinal tracer stripes
Customs tariff (HS)
8544.49 (insulated conductors ≤ 1000 V)

Sizes

7 standard TXL Anti-Capillary configurations

Typical SAE J1128 Type TXL · ISO 6722-1 Class C (+125 °C) outer diameter limits, copper content and cable weight.

Dimensions & weights
Order designationCores × mm² / AWGAWG ≈Outer Ø min
mm		Outer Ø max
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
mm		Enquiry
SAE J1128 TXL 125 °C Anti-Capillary Water-Blocked Wire (22–10 AWG)
TXL Anti-Capillary 22 AWG (19/34)22 AWG (0.35 mm²)221.51.6355
TXL Anti-Capillary 20 AWG (19/32)20 AWG (0.50 mm²)201.71.8575
TXL Anti-Capillary 18 AWG (19/30)18 AWG (0.80 mm²)181.92.07106
TXL Anti-Capillary 16 AWG (19/29)16 AWG (1.25 mm²)162.12.312147
TXL Anti-Capillary 14 AWG (19/27)14 AWG (2.00 mm²)142.52.719228
TXL Anti-Capillary 12 AWG (19/25)12 AWG (3.00 mm²)123.03.3313510
TXL Anti-Capillary 10 AWG (19/23)10 AWG (5.00 mm²)103.74.0505412
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Dimensions and weights are typical values per SAE J1128 Type TXL · ISO 6722-1 Class C (+125 °C). Minimum fixed bending radius shown is 3 × OD.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Check results

Drum core 300 mm ≥ 12 mmBending radius OK (3 × OD 2.0 mm)
Minimum bending radius
6 mm
Min. drum core diameter
≈ 12 mm
Cable weight on drum
0.5 kg
Copper content
0.4 kg
Indicative only: based on the datasheet outer diameter and 3 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
AC dielectric voltage test1.0 kV AC (50/60 Hz)Every manufactured length
Conductor DC resistanceIEC 60228 / ASTM (bare copper)Every manufactured length
Sample tests
Flame propagation testIEC 60332-1-2 / UL VW-1 / ISO 6722-1Per production batch
Insulation & sheath material physical propertiesSAE J1128 Type TXL · ISO 6722-1 Class C (+125 °C)Type approval

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

SAE J1128 Type TXL · ISO 6722-1 Class C (+125 °C)CE · RoHS 2 (2011/65/EU) · REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

SAE J1128 TXL [AWG] ANTI-CAPILLARY 125C TEBAOFLEX
Delivery form
Export wooden drums, reels or coils, cut-to-length on request
Packaging
Heat-treated ISPM-15 timber drums or spools with sealed ends
Conductor / colour options
Custom core counts, stripe combinations or cut harnesses on request

Technical documents

Downloads

PDFTXL Anti-Capillary Water-Blocked Automotive Wire – technical datasheet7 sizes · construction, technical data, approvalsXLSXTXL Anti-Capillary spec data (Excel)All 7 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

How does capillary wicking destroy sealed automotive ECUs even when connector grommets are intact?
Standard connector cavity seals (mat seals and single-wire silicone grommets) only seal around the outside of the wire insulation. If an open splice, unsealed sensor boot or ground eyelet further down the harness gets wet, thermal cooling inside the sealed ECU creates a partial vacuum that draws water and road salt right through the microscopic channels between the copper strands into the ECU PCB.
How does TXL Anti-Capillary stop longitudinal water migration?
During conductor stranding, the interstitial spaces between the 19 copper strands are filled with a non-greasy, cured elastomeric compound before the cross-linked XLPE insulation is extruded over the core, blocking fluid and gas flow along the conductor.
Does the anti-capillary compound interfere with F-crimps or ultrasonic splicing?
No. Unlike sticky grease or powder swell tapes, the cured interstitial elastomer is dry to the touch, does not smear onto stripping blades, and is displaced cleanly at the contact points during high-pressure terminal crimping and ultrasonic welding.
When should I choose TXL Anti-Capillary vs GXL Anti-Capillary?
Choose TXL Anti-Capillary (0.40 mm wall on 22–14 AWG) for passenger-car ECU, sensor and body harnesses that use compact thin-wall connector cavities. Choose GXL Anti-Capillary (0.58–0.94 mm wall) for heavy-duty commercial trucks, buses and off-highway chassis harnesses.

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03Message for our engineers

TXL Anti-Capillary Water-Blocked Automotive Wire

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Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
- Equipment and operating conditions:
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