EMI/RFI Shielding


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Seams and openings in electronic devices provide avenues for rogue energy waves to enter or exit a device, causing erratic performance. This is known as EMI (electromagnetic interference). Managing electromagnetic interference commonly includes a specialized form of EMI shielding or use of an EMI absorber

EMI SHIELDING: Boyd’s LectroShield fabric-over-foam, conductive foam, elastomers, adhesives, and metal foils are designed to manage interference energy, improving reliability and efficiency in device performance. These solutions are ideal for EMI RFI shielding applications requiring excellent shielding performance as well as high conformability, compressibility, cushioning, tight contact and dimensionally tight tolerances. These can be designed for electronic devices that need soft cushion and tight contact with a conductive function.

EMI ABSORBER: Boyd’s LectroShield EMI absorbers are designed to eliminate unwanted electrical “noise” in an electronic device. Different to shielding solutions, an EMI absorber is intended to absorb unwanted energy, controlling and minimizing internal interference and crosstalk, and is commonly used as a last minute fix to manage EMI concerns where device redesign is not possible. EMI absorbers can be flexible or rigid, easy to die cut, are dielectric so they can be used near metals, do not need to be grounded and available with PSA. For these reasons, EMI absorber applications are diverse and vary greatly from a more traditional EMI shielding gasket.

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  • EMI shielding at varying shielding effectiveness levels
  • EMI RFI absorption customized to specific frequency ranges: general EMI noise absorption (1MHz – 10GHz, permeability from 20u’ to 200u’), RFID & WPC (1MHz – 3GHz, permeability from 20u’ to 70u’), rigid NFC ferrite (13.56MHz), WPC in a rigid format (125KHz, permeability from 140 u’ to 670 u’)
  • Environmentally compliant
  • Lightweight & recyclable
  • UL 94 & NEMA flame retardant ratings
  • High electrical conductivity
  • High shielding effectiveness
  • Energy management
  • RoHS compliant
  • Living hinge materials
  • Quick turn prototyping


  • Conductive coated fabric, adhesives, paints, silicone, rubber,      copper & aluminum foil, conductive foam
  • Absorbing compounds
  • Shielding adhesives & foams
  • Flexible & rigid ferrite

Market Applications:

  • Fabric over foam
  • Springs
  • Input/output (I/O) gaskets
  • Enclosure door gaskets, EMI shielding gasket
  • Camera / lens gaskets & contacts
  • Cord/ribbon wraps
  • Shielding & conductive gaskets
  • Custom subassemblies & material stack-ups
  • Fingerstock
  • Air vents
  • Server cabinet door seals
  • Router enclosure seals
  • Gaming device chassis shields
  • Mobile computing port shields
  • Power supplies & cables
  • Grounding pads
  • Display & antenna shields
  • Wall grounding
  • LCD screen shields
  • Hinge conductivity
  • Backplane gaskets


Consumer Electronics
Mobile Electronics
Enterprise Electronics