| |
 |
|
Finding conductive o-rings and elastomers
(CHO-Seal® Soft-Shield®, Metal EMI Gaskets, Fingerstock
and EMI low closure force gasketing for your wireless communications
or enclosures has never been easier. As a major distributor
and fabricator of EMI Shielding products from Chomerics, we
offer traditional, Mesh-Strip™ CHO-Seal conductive elastomers.
Call Sealing Devices for applications support and design assistance
for designing EMI shielded products. |
|
^ Top |
| |
Sealing Devices offers conductive elastomers consisting of silicone,
fluorosilicone, EPDM or flourcarbon-fluorosilicone binders, with fillers
of pure silver, nickel plated copper, silver plated aluminum, silver
plated nickel, silver plated glass, unplated graphite particles, or
nickel plated graphite. Features of the elastomers include outstanding
resistance to compression set over a large temperature range. They
also meet MIL-STD-810 for resistance to fungus. Lastly, the materials
can provide an environmental seal and/or pressure seal.
CHO-Seal® elastomers are available for both military and commercial
applications, but excel in aerospace applications. Specialty elastomers
are also available for low closure force, waveguide, or corrosive
environments.
These conductive seals are available as extruded elastomers, and can
be cut-to-length. The available in many profiles including: Hollow
or Solid 'D'; Hollow or Solid 'O'; Hollow 'P', rectangle, and many
other shapes. Depending on width, they can also be ordered with pressure-sensitive
adhesives (PSA) applied.
Co-extruded strips offer optimal shielding, while providing corrosion
protection. When conductive and non conductive elastomers are vulcanized
together, they create a techincally superior design for aircraft doors,
rack mounted cabinetry, military or commercial communications and
many other applications. |
| |
^ Top |
| |
 |
Newer electronics often have low-closure
forece requirements. The Soft-Shield® family of fabric
over foam core EMI shielded gasketing line provides good shielding
performance, while eliminating waste and speeding assembly.
They are available in many configurations to meet your low
closure force needs. Here are a few of the families.
Soft-Shield 1000 -
Knitted wire over foam EMI gaskets.
>70 dB attenuation from 20 MHz to 10 GHz.
Only .35 lb/inch closure force.
Soft-Shield 2000 -
Conductive yarn over foam EMI gaskets.
>70 dB attenuation from 20 MHz to 10 GHz.
< 1 lb/inch closure force.
Soft-Shield 4000 -
Foil/Fabric over foam EMI Gaskets.
>90 dB attenuation from 10 MHz to 1 GHz.
Soft-Shield 5000 -
Conductive jacket over foam EMI.
>90 dB attenuation from 10 MHz to 10 GHz.
< 1 lb/inch closure force.
|
|
| |
^ Top |
| |
MESH STRIP EMI gaskets are compressible, all metal strips knitted
into rectangular or round cross sections. As spring-like, interlocked
loops, they are highly resilient. They are knit from either monel
or Ferrex wire. These gaskets offer good aging properties, excellent
tensile strength and spring like qualities. Mesh strip gaskets are
available in rectangular, round, or double round with fin cross sections.
SPRINGMESH® gaskets are hollow, highly resilient spring gaskets,
which offer the advantages of a mesh over core gasket without a core,
and recovery of more than 70%. Compression set is less than 30% at
80% compression. They are available as cut to length.
COMBO® STRIP gaskets combine MESH STRIP in parallel with an elastomer
weathering strip. Recommended for applications requiring a weather
seal in addition to EMI shielding, they are available with high tack,
long shelf life adhesive backing . Compression set and closure is
in the 25 to 100 psi range, although options are available for sealing
pressures as low as 10 psi.
POLASHEET® Gaskets are composite EMI shielding and weather sealing
materials of either solid or silicone sponge. Embedded monel or aluminum
wires are embedded in the silicone, and oriented perpendicular to
the mating flange surfaces to provide EMI shielding. It can be purchased
with high-tack pressure sensitive adhesive backing.
SPRING-LINE® Beryllium-Copper gaskets combine high levels of shielding
effectiveness with spring finger wiping, and low closure force properties.
With high tensile strength, outstanding electrical conductivity, and
excellent anti-corrosion properties, SPRING-LINE offers excellent
EMI shielding over a broad frequency range. |
| |
^ Top |
| |
CHO-BOND® adhesives and epoxies are available for microelectronics
packaging.
conductive expoxies
conductive flexible silcone adhesives
conductive caulks and sealants
conductive coatings
corrosion resistant flange coatings |
| |
^ Top |
| |
STREAMSHIELD® vent panels are used for high performance, economical
answers to EMI shielding and airflow issues for IT and Telecommunications
applications. They deliver EMC and thermal management performance
to meet current technology demands. |
| |
^ Top |
| |
Sealing Devices is a fully equipped robotic dispensing supplier of
Parker Chomerics Cho-Form® Form-in-Place EMI gasketing. This material
allows precise dispensing of positioned, conformable gaskets in very
small cross sections to free up package space and eliminate gasket
waste. These durable, highly conductive seals have low compression
set and offer years of effective EMI shielding and mechnanical performance.
>75 dB shielding effectiveness from 200 MHz to 10 GHz with very
small gasket beads. Accuracy of location to within .001 inch, they
are highly compressible, with limited deflection force. |
| |
^ Top |
| |
Sealing Devices is a manufacturer of shielded windows. Our custom
capabilities enable SD to meet your specific tolerances, often with
smaller minimums than other suppliers. |
| |
^ Top |
| |
Call us for a full line of thermal materials to enhance your board
design, or improve performance of your electronics package.
Would you like MSDS Sheets, RoHS information, or Product literature
from Chomerics?
http://www.chomerics.com/products/lit.htm
|
|
EMI Shielding
