This rubber is particularly used in EMI shielding as a medium to provide electrical conductivity across a gasket-flange interface
The rubber is made conductive by incorporating small conductive metal particles throughout the material. It can provide an EMI-proof and watertight seal in narrow constructions.
Electrically conductive rubbers are typically used for EMI applications. They are also useful for EMP protection, wave-guide applications and against static electricity. The rubber can be filled with silver, nickel, silvered glass, silvered aluminum, or graphite (only for ESD). Commercial EMI applications often choose Nickel-graphite conductive rubber (Part number 5760) or Graphite conductive rubber (Part number 5755) from a costs point of view while military and aerospace applications often use silver plated aluminum (Part number 5750) to meet Mil-G-83528C specifications. In military or aerospace, fluorosilicone versions may also be used due to their chemical and fuel resistance.
As the material shields high frequencies, electrically conductive rubber shows a shielding effect of 60 dB at 30MHz – 10GHz. Due to its excellent conductivity, grounding, and EMI shielding effect, it is well suited for military communications equipment. The rubber can be manufactured in various shapes such as sheets, molded parts, die-cut, strips, o-rings, etc.
Benefits:
Electrically conductive rubber is available in:
Special materials (on request)
These conductive rubber sheets are also available in special materials for special applications for example applications with chemicals. Below is a list of special materials. For availability and delivery please contact us.
Electrically conductive rubber is available as
Conductive adhesive information (Conductive PSA)
| Property | Unit | Outcome | Test method |
| Surface resistance | Ω/sq | <0.10 | MIL-DTL-83528C |
| Adhesive strength | G/25mm | 850 | ASTM D 3330 |
| Conductive PSA | – | Acrylic + Ni | – |
| Liner | – | Paper, Film | – |
| Please note: Conductive adhesive is optional. By default, these Conductive rubber gaskets are supplied without adhesive. | |||
Technical Properties:
| Part number | 5750 silver plated aluminium | 5755 Graphite | 5760 Nickel graphite |
|---|---|---|---|
| Filler | Ag/Al | Graphite | Ni-graphite |
| Base polymer | Silicone | Silicone | Silicone |
| Width (mm) | 430 x 450 (larger sizes on request) | ||
| Elongation, %, min. | 90 | 50 | 50 |
| Flame resistance, UL94 (horizontal) | HB | HB | HB |
| Flame resistance, UL94 (vertical) | V-0 | V-0 | V-0 |
| Volume resistance, Ohm-cm (expression of conductivity) | 0.008 | 1.8 | 0.05 |
| Surface Resistance, Ω/sq | 2 | 3-5 | |
| Operating temp. | +125 | +160 | +160 |
| Range (°C) | -55 | -50 | -55 |
| Colour | Dark tan | Black | Dark grey |
| Shore Hardness (A +/-5) ASTM D2240 | 65 | 60 | 60 |
| Volume Resistivity (ohms) ASTM D991 | 0.005 | 2.2 | 0.04 |
| Shore A (1 mm thickness) | 73 | 71 | 70 |
| Shore A (2 mm thickness) | 70 | 75 | 60 |
| Tensile strength. psi, min. | 90 | 50 | 50 |
Shielding performance:
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■ 5750 – Silver plated aluminium
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■ 5755 – Graphite
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■ 5760 – Nickel Graphite
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Please note: These values are measured under laboratory conditions. Results may vary in other situations; please read our Guarantee.
What questions need to be answered to select the right material?
Available sheet thicknesses
| Ag/Al Silicone conductive rubber (silver plated aluminum) 5750 | |||||||||
| Thickness (mm) | 0.3 | 0.5 | 0.3 | 0.5 | 1.5 | 1.7 | 2.0 | 2.5 | 3.0 |
| Part number | 5750-0.3 | 5750-0.5 | 5750-1.0 | 5750-1.2 | 5750-1.5 | 5750-1.7 | 5750-2.0 | 5750-2.5 | 5750-3.0 |
| Graphite conductive rubber 5755 | |||||||||
| Thickness (mm) | 1.0 | 1.2 | 1.5 | 1.7 | 2.0 | 2.5 | 3.0 | ||
| Part number | 5755-1.0 | 5755-1.2 | 5755-1.5 | 5755-1.7 | 5755-2.0 | 5755-2.5 | 5755-3.0 | ||
| Ni-Graphite conductive rubber (dark gray) 5760 | |||||||||
| Thickness (mm) | 0.3 | 0.5 | 1.0 | 1.2 | 1.5 | 1.7 | 2.0 | 2.5 | 3.0 |
| Part number | 5760-0.3 | 5760-0.5 | 5760-1.0 | 5760-1.2 | 5760-1.5 | 5760-1.7 | 5760-2.0 | 5760-2.5 | 5760-3.0 |
How does the conductive filler material in the rubber compare to costs and performance?
| Part number | Conductive filler | Cost | Conductivity | Typical shielding effectiveness* |
| 5750 | Silver plated Aluminium | $$ | Extremely conductive | 120 dB |
| 5760 | Ni-graphite | $ | Super conductive | 100 dB |
| 5755 | Graphite | $ | Very conductive | 70 dB |
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