Conductive Silicone Sheet
Carbon-loaded silicone sheet combining the flexibility and thermal resistance of silicone with electrical conductivity. Functions both as a low-current conductor and as electrostatic discharge (ESD) protection. Available in roll form for custom cutting or supply of die-cut parts.
Standard silicone is an excellent electrical insulator — precisely what is not wanted when the objective is to dissipate electrostatic charges or provide a conduction path. Conductive silicone solves this problem by incorporating carbon fillers into the silicone matrix, reducing electrical resistivity without sacrificing the properties that make silicone useful: flexibility, thermal resistance (–40 to +200 °C), chemical inertness and compressibility for sealing.
This sheet operates in two modes: as a low-current conductor (surface resistivity 100–200 Ω/□) for earthing, interface contacts and inter-component connections; and as electrostatic discharge (ESD) protection to prevent damage to sensitive electronic components, ignition in explosive atmospheres or static charge accumulation during handling processes. The carbon loading is homogeneous throughout the full thickness of the sheet — conductivity does not depend on a surface layer that could wear away.
Available in rolls of 500 mm × 10 m (thicknesses from 0.3 to 2.5 mm) and 400 mm × 10 m (3 mm). Thicknesses of 0.5, 1.0, 1.5 and 3.0 mm held in permanent stock for immediate dispatch. Can be supplied as full rolls, custom-cut pieces or die-cut parts to drawing. Colour: black (inherent to the carbon filler).
Conductive sheet or standard sheet with surface treatment?
Some surface treatments (conductive paints, metallisation) can impart conductivity to a standard silicone, but the conductivity is lost as the surface layer wears. In a carbon-loaded conductive silicone sheet, conductivity is a property of the bulk material — it does not degrade with use, cutting or compression. If conductivity must be maintained throughout the service life of the part, conductive sheet is the only reliable solution.
Which format do you need?
Locate your application and the recommended supply format.
| Requisito | Formulación | Serie | Proceso |
|---|---|---|---|
| ESD workstation mat | Conductive VMQ | 3 mm | Roll / custom cut |
| Die-cut conductive gasket | Conductive VMQ | 0.5–3 mm | Die-cut to drawing |
| ESD tray lining | Conductive VMQ | 0.5–1.5 mm | Custom cut |
| Contact pad / electrical interface | Conductive VMQ | 1.0–3.0 mm | Die-cut to drawing |
| ATEX antistatic protection | Conductive VMQ | 1.5–3.0 mm | Roll / custom cut |
| Cushioning + earthing | Conductive VMQ | 6–10 mm | Custom cut |
| Enclosure seal with electrical continuity | Conductive VMQ | 1.0–2.0 mm | Die-cut to drawing |
| Custom extruded conductive tube or profile | Conductive VMQ | Extruded Series 11 | Custom extrusion |
Key applications for conductive silicone sheet
ESD protection in electronics
Electrostatic charge accumulation during the handling, transport or storage of electronic components can cause discharges that damage integrated circuits, semiconductors and other sensitive devices. Conductive sheet used as a workstation mat, tray lining or closure gasket in transport containers dissipates charge in a controlled manner.
Conductive gaskets and seals
Where a gasket must provide mechanical sealing whilst simultaneously maintaining electrical continuity between the mating surfaces. The compressibility of silicone at 65 Shore A allows it to conform to surface irregularities whilst the carbon filler maintains the electrical path. Die-cut to customer drawing.
Earthing and interface contacts
Custom-cut conductive sheet can be used as a flexible interface contact between metallic components that require electrical continuity without a rigid connection. The flexibility of the silicone absorbs mounting tolerances and vibration, maintaining electrical contact where a rigid conductor would lose the connection.
ATEX environments and ignition-risk zones
In potentially explosive atmospheres, electrostatic charge accumulation on non-conductive surfaces can produce spark discharges with sufficient energy to initiate combustion. Conductive sheet dissipates charge continuously, eliminating the risk. Its thermal resistance (–40 to +200 °C) makes it suitable for demanding industrial environments.
Available thicknesses and formats
The sheet is supplied in rolls or as custom-cut/die-cut parts. The most common thicknesses are held in permanent stock for immediate dispatch. Others are manufactured to order with lead times of 2–4 weeks.
Thin gauges (0.3 to 1.0 mm)
0.3 · 0.5 · 0.8 · 1.0 mmThin sheets for applications where the available envelope is limited: interface gaskets in electronic enclosures, tray linings, contact pads. Flexibility is greatest at these gauges — the sheet conforms to curved surfaces and irregularities without pre-forming.
- Thicknesses
- 0.3 · 0.5 · 0.8 · 1.0 mm
- Tolerance
- ±0.2 mm
- Roll format
- 500 mm × 10 m
Availability: 0.5 and 1.0 mm in stock. 0.3 and 0.8 mm made to order.
Medium gauges (1.5 to 3.0 mm)
1.5 · 2.0 · 2.5 · 3.0 mmThe most versatile range: a balance between flexibility and mechanical consistency. The 3 mm thickness is the industry standard for ESD workstation mats and sealing gaskets with conductive function. Die-cuttable with standard tooling.
- Thicknesses
- 1.5 · 2.0 · 2.5 · 3.0 mm
- Tolerance
- ±0.2 mm (1.5 mm) / ±0.3 mm (2.0–2.5 mm)
- Roll format
- 500 mm × 10 m (up to 2.5 mm) / 400 mm × 10 m (3 mm)
Availability: 1.5 and 3.0 mm in stock. 2.0 and 2.5 mm made to order.
Thick gauges (6 to 10 mm)
6 · 8 · 10 mmHeavy-gauge sheets for applications requiring shock absorption with conductive function, compression pads with high deflection or mechanical isolation with electrical continuity. At these thicknesses, the sheet also functions as a vibration damper with ESD dissipation.
- Thicknesses
- 6 · 8 · 10 mm
- Tolerance
- ±0.4 mm (6–8 mm) / ±0.5 mm (10 mm)
- Format
- Made to order — consult dimensions
Availability: Made to order, lead time 2–4 weeks.
All thicknesses available in black (inherent to the carbon filler). Dimensional tolerances to Class 3 standard; Class 2 and Class 1 available on request. For custom die-cut parts, submit drawing with dimensions and quantity.
Technical properties of conductive silicone
Conductive VMQ — carbon-loaded
VMQ silicone with carbon filler providing volumetric electrical conductivity. Functions as a low-current conductor and as an electrostatic charge dissipator. Conductivity is a property of the bulk material, not a surface treatment — it is maintained through wear, cutting and compression.
ESD protection, earthing, conductive gaskets, interface contacts, ATEX environments.
| Property | Value | Test standard |
|---|---|---|
| Hardness | 65 ±5 Shore A | ISO 7619-1 |
| Tensile strength (MPa min) | ≥ 5.5 | ISO 37 |
| Elongation at break (% min) | ≥ 280 | ISO 37 |
| Tear strength (kN/m min) | ≥ 15 | ISO 34-1 |
| Density (g/cm³) | 1.25 ±0.05 | ISO 2781 |
| Surface resistivity (Ω/□) | 100–200 | IEC 60093 |
| Volume resistivity (Ω·cm) | 45.3 | IEC 60093 |
| Temperature range (°C) | –40 to +200 | — |
Colour: black (inherent to the carbon filler, not modifiable). Mechanical properties are lower than standard VMQ silicone of the same hardness — this is expected due to the incorporation of conductive fillers. The surface resistivity of 100–200 Ω/□ is sufficient for the majority of ESD applications (typical requirement < 10⁶ Ω/□). For applications requiring resistivities below 10 Ω/□, please consult.
VMQ silicone with carbon filler providing volumetric electrical conductivity. Functions as a low-current conductor and as an electrostatic charge dissipator. Conductivity is a property of the bulk material, not a surface treatment — it is maintained through wear, cutting and compression.
ESD protection, earthing, conductive gaskets, interface contacts, ATEX environments.
| Property | Value | Test standard |
|---|---|---|
| Hardness | 65 ±5 Shore A | ISO 7619-1 |
| Tensile strength (MPa min) | ≥ 5.5 | ISO 37 |
| Elongation at break (% min) | ≥ 280 | ISO 37 |
| Tear strength (kN/m min) | ≥ 15 | ISO 34-1 |
| Density (g/cm³) | 1.25 ±0.05 | ISO 2781 |
| Surface resistivity (Ω/□) | 100–200 | IEC 60093 |
| Volume resistivity (Ω·cm) | 45.3 | IEC 60093 |
| Temperature range (°C) | –40 to +200 | — |
Colour: black (inherent to the carbon filler, not modifiable). Mechanical properties are lower than standard VMQ silicone of the same hardness — this is expected due to the incorporation of conductive fillers. The surface resistivity of 100–200 Ω/□ is sufficient for the majority of ESD applications (typical requirement < 10⁶ Ω/□). For applications requiring resistivities below 10 Ω/□, please consult.
From sheet to finished part
Conductive sheet is supplied in roll form for direct use or converted into finished parts by cutting or die-cutting. For extruded conductive parts (tubes, profiles, bespoke gaskets), we work with our Series 11 formulation.
Application sectors
Electronics
ESD protection for components, workstation mats, conductive gaskets in electronic enclosures.
Industrial
Antistatic protection in ATEX zones, conductive gaskets in machinery, earthing applications.
Rail
EMI shielding and ESD protection in signalling equipment, electrical cabinets and on-board electronics.
Pharmaceutical
Antistatic protection in cleanrooms, conductive gaskets in production and packaging equipment.
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Need conductive silicone sheet?
Tell us the thickness, dimensions (full roll, custom-cut rectangle or die-cut part to drawing), quantity and intended application. If you need a custom extruded conductive tube or profile, we also manufacture these using our Series 11 formulation.
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