wire mesh EMI/RFI gasketing in all metal
or metal mesh with elastomer
VII gasketing is a metal EMI/RFI gasketing
material that provides resiliency, excellent conductivity and the ability to
withstand difficult environments. It is available in two forms.
knitted wire mesh strips
knitted wire mesh strips with an elastomer sponge core
All Metal Gasketing
VII all metal mesh gasketing is
constructed of knitted wire mesh strips which are calendered to close tolerance
cross sections of rectangular, round, round with fin and double round with
All metal construction provides excellent EMI/RFI protection because
the metal-to-metal contact and the ability of the mesh to cut through surface
films on mating surfaces, thus reducing surface resistivity to
micro-ohm-centimeter levels. The continuity of the knitted mesh wire gives the
gasket high internal conductivity, as well. The inherent resiliency of the
knitted mesh makes it ideal for applications in sheet metal enclosures where
compression forces are in a range of 5 to 20 psi and where pressure or weather
sealing is not required.
Metal Mesh With Elastomer Core
Multi-Point VII mesh strip
gasketing with elastomer core is constructed of two layers of knitted wire mesh
enclosing a core of neoprene or silicone sponge.
Produced in rectangular,
round, round with fin and double round with fin cross sections, the gasketing
is excellent in applications where a more highly resilient cross section is
required and closing forces are in the 50 to 100 psi range. The gasketing does
not provide a pressure seal but it does offer limited environmental
Choice Of Standard Materials
Standard wire materials are Monel, aluminum and tin-coated copper
clad steel. Monel is most commonly used because it combines good EMI/RFI
protection with excellent corrosion resistance, tensile strength and
resiliency. Tin-plated copper clad steel provides better EMI/RFI shielding at
lower frequencies but is more susceptible to corrosion. Aluminum mesh is
occasionally used when the mating surface is aluminum.
round and rectangular gasketing can be either held in place by sidewall
friction in tight fitting slots or bonded in place using a non-conductive
adhesive. Round gasketing with fin may be mounted by riveting, metallic strips,
spot-welding or adhesive bonding.
cross sections are available in diameters from .062" through 1". Round with fin
is available in sizes from .062 diameter up to 1" O. A. Rectangular cross
sections are available in sizes from .062" square through 1" square. All are
available on spools of any continuous length.
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