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A composite of metal sheeting impregnated with an elastomer to yield a highly conductive, yet resilient Gasketing material for EMI/RFI shielding as well as an environmental seal. A selection of Woven aluminium wire, expanded aluminium or monel sheet impregnated with silicone, fluorosilicone or neoprene rubbers are available. Expanded Monel wire is also available without the elastomer filler for use in applications where an environmental seal is not necessary. The material can be supplied as continous sheet or as die cut gaskets to customers requirements.
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Elastomer core gaskets are made of a resilient rubber core,
knitted over with layers of wire mesh (the standard is two
layers). The knitted wire element provides EMI shielding
effectiveness, while the elastomer core enables the gasket
section to recover more readily, following repeated
compression. Elastomer core gaskets are used where the
application requires a conformable EMI seal and even where a
dust protection is needed.
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These gaskets are realized wrapping with one or more metallic wire mesh a foam (polyurethane, neoprene and silicone).
To use where the closing are irregular or where a weak is desired strength of closing, but also a certain degree of protection is in demand from the dust or damp.
The installation can simply be effected for attrition or, in absence of throats on the wisecracks, through adhesive strip.
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Standard RB METALLIC RIBBONS are made by knitting one or several wires of an identical or different types.
The wires used are monel, tin-plated copper, tin-plated copper-clad steel.
Other metals are used for specific shielding : aluminium, stainless steel, pure copper, inconel… For certain
applications, there may be up to 6 wires, depending on the gauge of the mesh.
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Wire mesh gaskets are designed to offer a high level of attenuation. Their knit construction offers enhanced long lasting resiliency and is an ideal material for highly sensitive components where environmental sealing is not a concern. These gaskets are available in a variety of materials using utilizing versatile mounting options.
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Metex mesh gaskets have been proven, in aerospace, avionics, automotive and electronics systems, solving the most demanding shielding and sealing problems.
Key features of the product include: high-attenuation, suitability for harsh environments and extreme temperatures, custom profiles and densities, and a wide range of materials.
By choosing the correct material, wire diameter, mesh density and mesh profile, knitted wire mesh can be used to solve an extremely wide range of shielding, gasketing, electrical grounding, vibration and filtration design applications.
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SPRINGMESH™ Highly Resilient Mesh Gasket
SPRINGMESH™ gaskets feature a highly resilient, hollow knit, tin-plated steel mesh that provides excellent recovery from high compressive forces. Compression set is less than 30% at 80% compression. Round profile SPRINGMESH gaskets are ideally suited for gasket-in-a-groove applications, such as in cast housings for outdoor CATV boxes, NEMA enclosures with outboard environmental seals, and industrial enclosures.
POLASHEET®, POLASTRIP® Composite Gasket
POLASHEET® and POLASTRIP® gasketing are composite EMI shielding and weather sealing materials. Monel wire embedded in silicone and oriented perpendicular to mating flange surfaces provides the EMI shielding. Either solid or sponge silicone can be specified as the weather seal. Wires are crimped for additional resiliency. POLASHEET materials are supplied in sheet form from which gaskets are easily die-cut. POLASTRIP gaskets are provided in strip form or as finished custom gaskets fabricated from strips.
COMBO STRIP® Wire Mesh and Elastomer Weather Seal
COMBO STRIP® gaskets combine Chomerics' MESH STRIP gasketing in parallel with an integral elastomer weather sealing strip. They are available with or without adhesive backing in a broad range of standard cross sections. COMBO STRIP gaskets are recommended for applications requiring a weather seal in addition to EMI shielding. The standard mesh is monel or Ferrex (tin-plated, copper-clad steel) wire.
METALASTIC® EMI Gasketing with Pressure Seal
Chomerics METALASTIC® gasketing is a composite EMI and pressure seal in thin sheet form. Shielding is provided by woven aluminum mesh. Pressure sealing is achieved by neoprene or silicone elastomer impregnated in the mesh. PORCUPINE METALASTIC® gasketing is available in two forms: EMI shielding with pressure seal and EMI shielding only. Shielding is provided by expanded monel foil. For pressure sealing properties, the expanded monel is filled with silicone elastomer. All METALASTIC gasketing is available in sheets and die-cut shapes.
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Wire mesh gaskets are a very versatile and proven style of shielding. Wire mesh gaskets have a great variety of uses and there are several popular types to choose from depending on shielding or environmental requirements. Knitted gaskets can be made from a variety of metal wires, including monel, tin plated-copper clad-steel or aluminum. Cost-effective for low cycling applications with high shielding effectiveness over a broad frequency range. Available in a wide variety of sizes and shapes, the knit construction provides long lasting resiliency with versatile mounting options. Available with elastomer gasket for moisture and dust sealing.
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sed primarily in high-temperature or cryogenic seals and gaskets, calendared mesh and mesh-core cable are designed to not just survive but flourish in operating environments where other materials, such as refractory rope or polymer substrates cannot. During the design phase, wire types chosen specifically for their resistance to certain destructive elements give calendared mesh and mesh core cable resistance to temperature extremes, corrosion and otherwise destructive elements. Additionally, because knitted wire mesh is essentially a complex spring, its compression characteristics and resiliency features give it an inherent resistance to mechanical wear.
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Metex knitted wire mesh gaskets and seals provide resiliency, strength in compression, and a nearly unlimited choice of materials, constructions, or shapes for specific applications. Most important, they provide superior performance in hostile environments where other materials would fail as a result of decomposition or deformation.
Knitted mesh seals have no seams or ribs-normally the weak areas of any seal-so that when used in gasketing and sealing applications, they provide high-strength uniformity throughout the sealing area. Unlike woven or braided materials, knitted mesh consists of a continuous series of interlocking loops knitted in a tubular form, allowing two-dimensional movement in the plane of the mesh. This results in unusual flexibility and resiliency, even under heavy compression loads and exposure to extreme temperatures.
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