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Product

High-temperature wireDIN VDE 0250 / SiHF-GL300/500 V-60 to +180/+200 °C

SRG-K Silicone Fiberglass-Braided Multicore Cable300/500 V (450/750 V) silicone multicore cable with overall varnished E-glass outer braid

SRG-K (SiHF-GL) flexible high-temperature multicore cable combining Class 5 tinned copper conductors, EI2 silicone core insulation, an inner silicone sheath, and a silicone-varnished E-glass outer braid for -60 °C to +180 °C (+200 °C) service.

Flame-retardant
Ozone, UV & moisture
Oil-resistant
Approved
Order designation
SRG-K 4G1.5
Outer Ø ≈
9.70 mm
Wall thickness
1.40 mm
Total weight ≈
168.6 kg/km
Min. bend R (fixed)
58 mm
All sizes (19)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
300/500 V
450/750 V · 2000 V AC test
Temperature
-60…+180 °C
+200 °C continuous glass braid
Conductor
Sn-Cu Class 5
Fine-stranded tinned copper
Core & sheath
Silicone EI2
Silicone cores + inner jacket
Outer armour
Varnished glass
Silicone-impregnated E-glass
Min bend radius
6 × OD fixed
12 × OD flexing installation

Typical values for this cable type, based on DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734 — confirmed in the datasheet and quotation for your order.

Application fit

Is SRG-K right for your machine?

Select SRG-K where standard unbraided SiHF silicone cable needs external mechanical protection against hot metal edges, abrasion, and radiant heat in ovens and steelworks.

Furnace, kiln & high-temp zone

Suitable

Varnished E-glass outer braid shields the inner silicone sheath against radiant heat and hot surface contact up to +200 °C (+250 °C peak).

Fixed installation

Suitable

High cut-through and notch resistance when pulled over steel cable trays, furnace frames, and kiln ductwork.

Motor stator, traction & converter leads

Suitable

Ideal for auxiliary fan motors, damper actuators, and heater banks on industrial baking ovens and cement kilns.

Motorised monospiral reel

Not suitable

Not designed for continuous high-speed crane reeling; use NSHTÖU for drum reeling.

Use NSHTÖU for drum reeling
Typical machinesMetallurgy & Steel Rolling MillsCement Kilns & Glass FurnacesIndustrial Ovens & Bakery LinesPlastic Extrusion & MouldingFoundry & Heat-Treatment Plants

Construction

Layer by layer

SRG-K (SiHF-GL) four-layer build: Class 5 tinned copper conductors, EI2 silicone core insulation, extruded silicone inner sheath, and silicone-varnished E-glass outer braid.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Class 5 tinned copper conductorFine-stranded tinned annealed copper (IEC 60228 Class 5)Corrosion- and oxidation-resistant flexible conductor for +180/+200 °C operation
2Silicone rubber core insulationCross-linked silicone elastomer Type EI2 (EN 50363-1)Maintains dielectric integrity and flexibility from -60 °C to +180 °C
3Inner silicone rubber bedding sheathExtruded halogen-free silicone compound consolidating the cabled coresSeals the core bundle against moisture and dampness before braiding
4Silicone-varnished E-glass outer braidClosely braided E-glass fibre sleeve impregnated with high-temp silicone resinIncreases mechanical notch, abrasion, and radiant-heat resistance over plain SiHF

SRG-K-J (3G–12G)

With green-yellow protective earth conductor for 3-phase heater and motor circuits

SRG-K-O (2×–7×)

Without protective earth conductor for control, sensor, and 2-wire heating circuits

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
300/500 V (up to 450/750 V)
AC test voltage
2000 V AC (50 Hz, 5 min)
Insulation resistance
≥ 200 MΩ·km at +20 °C

Thermal

Continuous operating temp.
-60 °C to +180 °C (+200 °C jacket)
Short-term peak temperature
+250 °C intermittent thermal peak
Low-temperature limit
-60 °C fixed · -25 °C flexing

Mechanical

Conductor stranding
IEC 60228 Class 5 fine-stranded tinned Cu
Min. bending radius (fixed)
6 × overall cable diameter
Min. bending radius (flexing)
12 × overall cable diameter

Resistance

Flame retardance
IEC 60332-1-2 self-extinguishing
Halogen-free & acid gas
IEC 60754-1 & IEC 60754-2
Abrasion & notch resistance
Reinforced by varnished E-glass braid

Reference standards

Reference standard
DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734
Core identification
DIN VDE 0293-308 or numbered cores
RoHS & REACH
RoHS 3 & REACH compliant

Identification

Outer braid colour
Red-brown or white/tan with tracer
Tag / surface marking
TEBAOFLEX SRG-K [n×mm²] 300/500V +180C
Customs tariff (HS)
8544.49

Sizes

19 standard configurations (SRG-K)

Engineering dimensions, conductor stranding, mass and electrical ratings for SRG-K per DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734.

Dimensions & weights
Order designationCross-section / sizeConductor buildWall ≈
mm		Outer Ø ≈
mm		Metal
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard SRG-K configurations
SRG-K 2×0.752×0.75Class 5 Sn-Cu (0.75 mm²)1.407.5014.480.845
SRG-K 3G0.753G0.75Class 5 Sn-Cu (0.75 mm²)1.407.9021.695.247
SRG-K 4G0.754G0.75Class 5 Sn-Cu (0.75 mm²)1.408.5028.8114.151
SRG-K 5G0.755G0.75Class 5 Sn-Cu (0.75 mm²)1.409.2036.0135.955
SRG-K 2×12×1Class 5 Sn-Cu (1 mm²)1.407.9019.292.847
SRG-K 3G13G1Class 5 Sn-Cu (1 mm²)1.408.3028.8110.150
SRG-K 4G14G1Class 5 Sn-Cu (1 mm²)1.408.9038.4131.953
SRG-K 5G15G1Class 5 Sn-Cu (1 mm²)1.409.6048.0156.758
SRG-K 2×1.52×1.5Class 5 Sn-Cu (1.5 mm²)1.408.5028.8114.151
SRG-K 3G1.53G1.5Class 5 Sn-Cu (1.5 mm²)1.408.9043.2136.753
SRG-K 4G1.54G1.5Class 5 Sn-Cu (1.5 mm²)1.409.7057.6168.658
SRG-K 5G1.55G1.5Class 5 Sn-Cu (1.5 mm²)1.4010.4072.0199.662
SRG-K 7G1.57G1.5Class 5 Sn-Cu (1.5 mm²)1.4011.30100.8251.568
SRG-K 12G1.512G1.5Class 5 Sn-Cu (1.5 mm²)1.4014.60172.8424.388
SRG-K 3G2.53G2.5Class 5 Sn-Cu (2.5 mm²)1.4010.8072.0209.665
SRG-K 4G2.54G2.5Class 5 Sn-Cu (2.5 mm²)1.4011.8096.0260.371
SRG-K 5G2.55G2.5Class 5 Sn-Cu (2.5 mm²)1.4012.80120.0313.377
SRG-K 4G44G4Class 5 Sn-Cu (4 mm²)1.8013.90153.6381.683
SRG-K 4G64G6Class 5 Sn-Cu (6 mm²)1.8015.40230.4510.292
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal engineering values for SRG-K subject to standard manufacturing tolerances per DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734.

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
Dielectric spark / high-voltage withstand test100 % in-line spark and AC/DC dielectric withstand per DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734Every manufactured length
Conductor DC resistance & continuity checkWithin maximum 20 °C resistance limit specified for SRG-KEvery spool or drum length
Sample tests
Thermal ageing & dimensional verificationWall thickness, concentricity and post-ageing elongation per DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734Per production batch
Flame, outgassing or high-temperature enduranceQualified to DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734 thermal and environmental performance criteriaType qualification

Inspection certificate

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

Product approvals

DIN VDE 0250-1 / EN 50525-2-83 / JB/T 8734CE (2014/35/EU) & RoHS 3 (2015/863/EU) CompliantREACH SVHC & Halogen/Asbestos Compliance Verified

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX SRG-K 4G1.5 300/500 V -60/+180 °C CE
Delivery form
Precision spools, coils or export wooden drums
Standard lengths
50 m · 100 m · 500 m · 1000 m (or cut harnesses)
MOQ
100 m (stock sizes) · 300–500 m (custom build)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFSRG-K Silicone Fiberglass-Braided Multicore Cable – technical datasheet19 sizes · construction, technical data, approvalsXLSXSRG-K spec data (Excel)All 19 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.

What is the advantage of SRG-K (SiHF-GL) over unbraided SiHF silicone multicore cable?
Standard silicone rubber has relatively low tear and cut-through strength when dragged across steel edges or exposed to hot metal scale. SRG-K adds a tightly woven, silicone-varnished E-glass outer braid over the inner silicone sheath, dramatically improving mechanical durability.
Why does SRG-K include an extruded inner silicone sheath beneath the fibreglass braid?
Unlike low-cost cables that apply a glass braid directly over loose cores, SRG-K extrudes a continuous silicone inner sheath around the cabled cores first. This keeps the cable round, blocks moisture ingress to the cores, and cushions the cores during bending.
What does the '-K' suffix indicate in SRG-K?
The '-K' suffix denotes an IEC 60228 Class 5 fine-stranded flexible tinned copper conductor, ensuring easy routing and vibration resistance on industrial ovens, kilns, and heating machinery.
When should I choose FLAME ARREST LT instead of SRG-K?
Choose SRG-K for dry radiant-heat zones up to +180/+200 °C. If the cable is splashed with cutting oils, hydraulic fluids, or quench water that could soak into an exterior glass braid, choose FLAME ARREST LT with its smooth liquid-tight outer elastomer sheath.

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SRG-K Silicone Fiberglass-Braided Multicore Cable

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
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