Electron beam cross-linked polyolefin (XLPO) insulated automotive primary wire. Designed for wire harness circuits in automobiles, motorcycles and motor vehicles requiring superior heat, chemical, and abrasion resistance. Manufactured to SAE J1128 : 2015.
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Filter by spec standard, cable type, size, and insulation colour. Part numbers end in -XX — replace XX with your colour code when ordering.
| Part Number | Type | Size | Stranding | Cond. Dia (mm) | OD (mm) | Weight (kg/km) | Resistance (Ω/km) | Current (A) | Std. Length | Action |
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XX in the part number with your required colour code (e.g. 04 for Black, 09 for White). 90+ single and dual-colour options available — use the Part Number Builder tab to configure your exact specification. Interactive Configurator
Select your cable parameters to generate a Siechem part number and view the full decoded specification.
Siechem GXL/SXL cables are manufactured in an AS9100D, ISO 9001 and ISO 14001 certified facility. All wires are 100% spark-tested and meet RoHS EU Directive.
Thin-wall XLPO insulation for general vehicle wiring applications. Smaller outer diameter and lower weight than standard PVC alternatives. Available in bare and tinned conductor variants.
Thicker-wall XLPO for demanding underhood and special purpose applications. Provides greater mechanical protection for environments with higher abrasion or vibration exposure.
Electron beam crosslinking creates a three-dimensional polymer network that prevents melting at elevated temperatures, improves cut-through resistance, and maintains flexibility in cold environments down to −40°C.
| Standard | SAE J1128 : 2015 |
| Conductor Material | Soft-annealed electrolytic copper (E-Cu ETP1) |
| Conductor Type | Bare or Tinned per ASTM B3 |
| Insulation | Electron beam cross-linked polyolefin (EBXL-XLPO) |
| GXL Wall Thickness | 0.41 mm (min) — general purpose, thinner wall |
| SXL Wall Thickness | 0.52 mm (min) — special purpose, thicker wall |
| Temperature Rating | −40°C to +125°C · 3000 hours |
| Test Voltage | 1 kV |
| Flame Retardancy | Self-extinguishing · UL 1581 VW-1 |
| Chemical Resistance | Acids, alkalis, petrol, diesel, oil |
| RoHS | Compliant — EU Directive 2011/65/EU |
| Size Range (GXL) | AWG 6 to 20 |
| Size Range (SXL) | AWG 8 to 20 / 0.5 to 8 mm² |
90+ dual-colour combinations also available (e.g. Black/Red-39, Green/Black-42). Contact sales for the full colour matrix.
Manufacturing Excellence
Siechem's in-house electron beam irradiation facility and fully equipped laboratory ensure every GXL/SXL wire meets zero-defect quality standards before despatch.