Twinshield |
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Twinshield is a combination gasket, consisting of a knitted wire mesh bonded
to a non conductive elastomer strip. The product is available in a variety
of permutations of mesh and elastomer, to combine excellent EMI performance,
with a dust, environmental, or pressure sealing capability.
General description
Monel, TCS, aluminium and stainless steel wire types are all available,
either with or without an elastomer core. When selecting wire type, it is
important to consider optimum shielding performance versus galvanic
compatibility. Either solid mesh or elastomer cored mesh can be used to
configure in EMI performance, a second mesh gasket can be bonded to the
other edge of the rubber strip.
Both neoprene and silicone rubber may be used in sponge or solid form, for
the non conductive carrier strip. A pressure sensitive self adhesive backing
can be applied for ease of application.
Twinshield is available in continuous lengths of up to 10 meters or cut to
size. The alternative is for us to supply you with custom made ‘picture
frame’ gaskets, in accordance with your drawing.
Mechanical compression stops can be incorporated into the design of the
gasket, thereby limiting the risk of causing compression set, or damage to
the seal. Compression stops are available in two forms, as an aluminium
collar which is bonded into the fixing hole, or as a small metal disc which
is normally fitted either side of the fixing holes.
In both cases the ‘stops’ are designed to allow a predetermined level of
compressive force to be applied to the gasket.
Moulded Twinshield is a variation on the conventional
product design in as much as the knitted wire element, rather than being
bonded to the rubber, is moulded into a solid silicone elastomer.
The product is normally supplied as an ‘0’ ring for fitting into a channel,
where it can provide full environmental protection, so long as the fastener
arrangement is designed adequately. A table of standard part numbers is shown on page 30, however if the size that interests you is not shown, please contact us to discuss your requirement.
Twinshield can be configured using a multitude of different profiles and
sizes. Material Specifications Wire
Elastomer
ApplicationsTwinshield gaskets provide a reliable, high level of performance and are tolerant of harsh use and/or conditions use making them ideal for demanding applications such as Industrial microwave oven doors |
