Conductive Elastomers

Conductive Elastomers are fully cured silicones or fluorosilicone loaded with electrically conductive particles providing superior EMI/RFI shielding performance combined with excellent environmental sealing. The various conductive fillers are designed to ensure galvanic compatibility whilst providing low contact resistance between mating surfaces.

Features & Benefits

  • Highly conductive EMI/RFI gasket and environmental seal
  • Performs in wide temperature range -55˚C +160˚C
  • Fluorosilicone for harsh environments: Fuel oils and solvents
  • Choice of materials for galvanic compatibility
  • Flame retardant UL94 V-0 rating (molding grade only)
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White paper: Electromagnetic Interference Shielding

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Request free samples for our EMI Shielding portfolio to test in your design

Conductive Fillers available for silicone and fluorosilicone

  • Nickel Plated Graphite: A high quality cost effective commercial material with increased use in the military markets. Easily extruded or moulded. SNG FR grade to UL94 V-0.
  • Silver Plated Aluminium: An excellent grade high performance material widely used for higher frequency applications in the commercial and military markets. Lighter in weight than some other materials.
  • Nickel Plated Aluminium: This material offers the best corrosion performance with aluminium metalwork and a high degree of shielding effectiveness with test data up to 40 GHz.

Design Considerations

  • It is important that this material is not over-compressed. If the design of the equipment does not allow for any mechanicalmethod of preventing over-compression, the gasket should be fitted with built-in compression limiters, either metal stops fitted to the gasket, or metal collars fitted into each fixing hole.
  • The material is not suitable in sliding applications.
  • Recommended compression: 10% to 20%.
  • Self-adhesive backing (conductive or non-conductive) is offered as an assembly aid only.
  • Fluorosilicone: self-adhesive backing is not recommended for use with this type of elastomer.
  • Minimum material width should not be less than 2mm or at least the material thickness in any part of the gasketIf this cannot be achieved around fixing holes consider using a slot. Particular attention is required if specifyingcompression collars in holes.
  • Consideration must be given to compression forces, hole centres, size and number of fixings and rigidity of mating flanges.
  • Integral compression stops or collars should be considered to limit over compression if external controls cannot be applied.Recommended minimum sheet thickness for integral limits is 1.5mm.

Kemtron Acquisition

Kemtron Ltd., a leading player in the RFI/EMI shielding, environmental sealing, gaskets and components, is now part of TE Connectivity. Together, TE and Kemtron will offer more design capabilities and make the impossible possible.

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Kemtron Ltd., now part of TE Connectivity Extended product portfolio

Contact information

United Kingdom

Phone: +44 (0) 1376 348115

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Phone: + 33 (0) 160778316

Email :



Phone:  +44 (0) 1376348115



Rest of Europe

Phone: +44 (0) 1376348115 




Phone: +44 (0) 1376348115

Email :