Dispensed Conductive Gasket

form in place gasket

 

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Cybershield has teamed with Laird Technologies as Authorized Form-In-Place Conductive Gasket Dispenser.

 Contact Cybershield to review your requirements or to discuss design options.  We will promptly respond to your phone or email inquiry and provide technical support.

Cybershield has the ability to robotically dispense Form-In-Place Conductive Gaskets onto flat surfaces, into grooves and top of walls with landing area as narrow as 0.025" (0.625 mm).  Conductive form-in-place gaskets offer:

  • Low unit cost and initial set-up and programming cost
  • Exceptional placement accuracy, as tight as +/-0.001" (0.025 mm)
  • Tightly controlled bead profile tolerance, from +/-0.003" (0.075 mm)
Form-in-Place conductive gaskets offer EMI RFI shielding, grounding and environmental seal onto a wide range of substrates. Download form-in-place conductive gasket design guidelines and Laird gasket material specifications.  Gaskets can be dispensed onto:
  • Conductive painted or plated plastic part
  • Wide range of metals including nickel plated steel or aluminum, anodized aluminum, copper, brass, bronze and nickel alloys

Conductive gaskets provide EMI/RFI shielding, including:

  • Protect electronics inside device from ambient interference
  • prevent interference within the electronic device from one compartment to another by effectively shielding each compartment from interference fro another compartment
  • Control radiated emissions

Typical applications include wireless handsets, PDA’s, PC cards, telecom base stations, satellite radios, military equipment, medical devices, navigation systems and test equipment.

form in place gasket on plastic and metal parts

Form-In-Place Conductive Gasket Material Properties

Source - Laird Technologies

All dimensions shown in inches (millimeters) unless otherwise specified
Product Highlights Small consistent bead can be applied to thin walls, into grooves, and onto flat surfaces saving labor and eliminating material waste
Soft compressible materials
Effective alternative to traditional application of gaskets
Automated process capable of irregular shapes and tight tolerances
Dispense on metal or plastic
SHIELDING EFFECTIVENESS
Transfer Impedance (500 MHz)
90 to 120 dB
H-field (200 KHz) Mil 285 50 to 70 dB
Plane Wave (2 GHz) Mil 285 70 to 100 dB
Volume Resistivity 0.002 to 0.008 ohm-cm

Available Size Range

Height: 0.015" to 0.090" (0.38 to 2.3 mm)
Width: 0.018" to 0.125" (0.38 to 3.1 mm)

Deflection Operating Range

20-40% Deflection

Compression Force
(based on shape selection)

1.2-1.9 Lbs./linear in. (2.1-3.3 N/cm)
@ 0.024" (0.60 mm) height @ 20% deflection

Compression Set

<20% @ 50% Deflection

Joint Unevenness Accommodation

0.002 to 0.006 (0.05 to 0.15)

Compound/Material Availability

Elastomer Silicone fillers: Silver plated aluminum, silver plated copper and silver plated nickel

Temperature Range

-58 to 257°F (-50 to 125°C)

Available Profiles

"D" Shape Bead

Mounting Methods

Directly applied to mounting surface

The dispensed conductive gasket material options offered by Cybershield:

  • Soft and highly compressible with low Shore A hardness and compression set characteristics.
  • Provide excellent EMI RFI shielding where a limited compression force is available or where mating areas have a very low rigidity, such as thin wall plastic injection molding.
  • Form-in-place dispensed conductive gasket enables tighter package design.
  • For small and narrow flanges, gaskets can be applied as narrow as 0.018" (0.46 mm) on minimum landing area of 0.025" (0.6 mm). This allows for more critical packaging space for PCB traces and board component placement for a smaller overall package design.
  • Conductive gaskets can be dispense onto aluminum, steel or magnesium, plated plastic parts, and conductive painted plastic.
  • Conductive gasket equipment has high volume capabilities and excellent process control.
  • Cybershield has extensive dispensing capacity that can produce a conductive gasket with heights of 0.015"-0.090” (0.38 mm-2.3 mm) on part size up to 2 feet x 2 feet x 6 inches (0.6 m x 0.6 m x 0.15 m).

Contact Cybershield for Technical Specifications, Process Capability and Shielding Effectiveness Data.

Cybershield supports customer production requirements and streamlines supply chain with Turnkey Manufacturing Services:

  • Injection Molding
  • Plastic Metallization
  • Mechanical Assembly Services
  • Automated assembly
  • Full project turnkey responsibility where we will take your specification and will have all the components tooled and produced.
Our applications specialists are ready to support your next EMI RFI shielding requirement project from conception through production.Contact Cybershield for Technical Specifications, EMI & RFI shielding effectiveness data, Process Capability, and Application Assistance.