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Leader Tech's Electrically Conductive Elastomer materials are ideal for customer applications requiring both excellent EMI shielding and environmental sealing across a wide temperature range. Conductive Elastomer compounds are available in standard and custom configurations including extruded, molded, sheet stock, and die cut gaskets.
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Over-Molded Cover Seals
Enclosure shielding and environmental sealing performance are improved in a number of ways when conductive elastomer gaskets are molded directly to a flange surface instead of being adhesive bonded or mechanically attached. Over-molded gaskets provide the optimum seal profile, achieving more gasket deflection with limited closure force when compared to flat, bonded gaskets.
Molded D- and O-Rings
Parker Chomerics' D-ring and O-ring conductive elastomer gaskets provide moisture/pressure sealing and EMI shielding when compressed in a properly designed groove. They are interchangeable with standard non-conductive seals of the same dimensions.
Custom Molded Gaskets
Parker Chomerics can mold conductive elastomer EMI gaskets to fit practically any application. Custom molded elastomer gaskets can include tight corners, retention bumps and other special geometries. Many other features can be added, such as fabric or mesh reinforcement, pressure-sensitive adhesive, fasteners and compression stops. Non-conductive silicone environmental seals can be bonded to or co-molded with conductive EMI shielding elastomers.
Connector Gaskets
Chomerics' die-cut conductive elastomer gaskets provide shielding and environmental sealing when inserted between a connector flange and their mating surfaces. A variety of Mil-Standard mounting flange EMI gaskets are available, along with interfacial EMI seals and jam nut seals. Chomerics also provides D-subminiature rectangular gaskets in a complement of shell sizes from 9 to 50 pin.
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SSI's engineered electrically conductive elastomers (conductive rubber) provide sealing solutions for mission critical applications that require both environmental and electromagnetic interference, electrostatic discharge, and radio frequency shielding. The incorporation of elastomers with alloys creates a multi-material compound capable of providing electrical shielding with the superior physical properties of an engineered elastomer. SSI's material engineering team utilizes a variety of elastomeric binders combined with a large array of conductive fillers to custom design solutions for all types of applications in the aerospace, semiconductor, and medical device industries.
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Conductive Non-Woven textile appears as compact felt, characterized by a less volumetric resistivity, very good punching and competitive price with respect to other materials, above all for medium/great (>5.000 pieces).
Such materials can be supply as semifinished in rolls or various height and length spools for following customer machining or punching on drawing.
Their use is recommended when it take a good Shielding Performance, electrostatic discharges protections or grounding, without particular environmental requirements.
Typical applications are: cable flanges, panel or plate connectors, permanent closings on cabinets and easy to apply for shielding rooms.
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Conductive foam offers unmatched compression set performance while providing a relatively soft Compression Load Deflection (CLD) curve. Lower CLD properties further reduce the potential for distortion while in application. When the gasket is compressed greater than the recommended 50%, compression force is reduced by half.
A popular Laird Technologies product in this category is Electro-Seal conductive elastomers. Electro-Seal conductive elastomers are ideal for both military and commercial applications requiring both environmental sealing and EMI shielding. Compounds can be supplied in molded or extruded shapes, sheet stock, custom extruded or die-cut shapes to meet a wide variety of applications. Electro-Seal conductive elastomers provide shielding effectiveness up to 120dB at 10GHz.
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Conductive urethanes are made by three layers, PET + PU + PET, heat sealed between them and made conductive through chemical-galvanic bath (Cu+Ni).
They appears as soft mat (width 30cm), sufficiently compact.
Able to realize punching gaskets for flanges and connectors, are also particularly suitable to realize shielding cells (compartimentation).
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Fabric-over-Foam EMI gaskets offer high conductivity and shielding attenuation and are ideal for applications requiring low compression force. The Fabric-over-Foam profiles are available in a UL 94V0 flame retardant version and offer high abrasion and shear resistance. Typical Fabric-over-Foam EMI gasket applications include shielding or grounding of computer and telecommunications equipment seams and apertures.
Laird Technologies provides the widest range of shapes and thickness to meet any design need. Depending on the shape and Fabric-over-Foam materials, compression of the gasket from 30% to as high as 75% can be allowed, thereby accommodating the tolerances of your mechanical system.
There are a wide range of enclosure materials and operating environments, so material compatibility is critical for reliability. Laird Technologies offers the widest range of materials in the industry and can design a solution for your application. Custom sizes and shapes can be designed to meet your application requirements, along with special purpose pressure sensitive adhesives and other features.
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Available in a wide range of standard profiles and special design profiles. Sheet with conductive adhesive,“O” ring, cord and hollow shape. Nickel-graphite, graphite and silver base.
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Connector gaskets can be die-cut to specification. They increase the electric continuity between connector gaskets and boxes.
The texture, homogeneity and chemical composition of the silicone base is not changed or modified by the presence of metal wires. The tolerance of NEOSIL F to
chemical corrosion and vibration as well as its durability are the same as for pure silicone. The presence of wires running perpendicular to the surfaces, but contained in the mass of the material, does not affect the airtightness or watertightness performance of NEOSIL F. In addition, since Monel wire ensures good compatibility with most metals, even the slightness galvanic corrosion is rarely detected between NEOSIL F gaskets and its support, even in aluminium.
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These EMI Shielding Gaskets are realized covering one soft foam of Polyurethane, Silicone or Neoprene with conductive polyester woven (Nickel or Tin-Copper electroless or galvanic deposit on all single polyamide yearns and then weaved).
This contribute to obtain excellent efficiency shielding and invariability in the time of the conductivity value (until 0.08 Ohm/sq - value max).
The sizes are square, rectangular, circular or "D" but our equipment, however, allow different form sections.
The installation, usually, is realized by a biadhesive tape laid on a side of the gasket (standard).
Considered high abrasion resistance of covering woven of these gaskets, ideal use is on cabinet doors subject to frequent openings, therefore where it is normally desired a puny clothing strength.
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Used where a concentration of high contact force is needed to assure strong electrical bond ; ie in a vibrating environment . Avalaible with optional conductive adhesive
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Over-Molded Cover Seals
Enclosure shielding and environmental sealing performance are improved in a number of ways when conductive elastomer gaskets are molded directly to a flange surface instead of being adhesive bonded or mechanically attached. Over-molded gaskets provide the optimum seal profile, achieving more gasket deflection with limited closure force when compared to flat, bonded gaskets.
Molded D- and O-Rings
Parker Chomerics' D-ring and O-ring conductive elastomer gaskets provide moisture/pressure sealing and EMI shielding when compressed in a properly designed groove. They are interchangeable with standard non-conductive seals of the same dimensions.
Custom Molded Gaskets
Parker Chomerics can mold conductive elastomer EMI gaskets to fit practically any application. Custom molded elastomer gaskets can include tight corners, retention bumps and other special geometries. Many other features can be added, such as fabric or mesh reinforcement, pressure-sensitive adhesive, fasteners and compression stops. Non-conductive silicone environmental seals can be bonded to or co-molded with conductive EMI shielding elastomers.
Connector Gaskets
Chomerics' die-cut conductive elastomer gaskets provide shielding and environmental sealing when inserted between a connector flange and their mating surfaces. A variety of Mil-Standard mounting flange EMI gaskets are available, along with interfacial EMI seals and jam nut seals. Chomerics also provides D-subminiature rectangular gaskets in a complement of shell sizes from 9 to 50 pin.
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At Gore, we have leveraged our materials expertise to create a portfolio of EMI gasket solutions to meet a wide range of application needs and address the challenges designers face.
Gore offers a wide range of EMI gasket solutions that feature a variety of material types and application forms that range from highly customized precision die-cut solutions to standardized off-the-shelf solutions. Follow the links below or contact us for more information on the solution to meet your design need.
Adhesive Backed EMI Gaskets
GORE-SHIELD® Adhesive Backed EMI Gaskets feature CPSA backing and easy installation. They are available in Strip form or Precision Die-Cut shapes.
Surface Mount (SMT) Compatible Gaskets
GORE-SHIELD® SMT EMI Gaskets are electrically conductive EMI gasket building blocks. They are comprised of a conformable electrically conductive gasket material bonded to a thin, solderable metal support layer via an electrically conductive adhesive.
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The board-level shields provide isolation of board-level components, are available in tape-and-reel for automated pick-and-place applications, and come in standard and custom shapes that can incorporate a removable lid for component access.
Products range from the traditional metal enclosures of two-piece, single-piece, EZ Peel™ and combination BLS to fully custom multi-compartmental applications and drawn shields. The combination shields can incorporate conductive elastomers, thermal pads, and RF absorber material; and are designed to meet the specific needs of any high-performance application.
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Male rigs are formed with the curved contact surfaces on the OD for microwave cavities , tuning and shielding applications . Rings are sized in diameters as indicated by forming many of our standard shielding strips .
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Specifically designed for large enclosure doors , or where compression of the gasket is achived by angular engagement of the mating surfaces such as with screen room doors or in joining groups of enclosures .Mounting holes of .142” diameter on .375” centers accommodate mechanical fastening with screws or rivets
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Excellent shielding effect, high conductivity and umidity corrosion proof.
Fabric with or without HOT MELT.
The flame retardant products are rated by of UL94 VTM-1 or VTM-0.
All items are RoHS compliant.
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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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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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For areas where small dynamics range is required , and where the shield in its compressed state will not extend beyond its uncompressed dimension “A”. Mounting is simple with standard instant Tac adhesive . Optional poron rubber enviroseal protects against moisture , dust and other contaiminants .Also available in continuous length rolls
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SPRING-LINE™ BeCu Spring Fingers and Ground Strips
SPRING-LINE™ beryllium copper gaskets combine high levels of EMI shielding effectiveness with spring-finger wiping and low closure force properties. Beryllium copper's high tensile strength, and superb electrical conductivity are ideal for shielding over a broad frequency range. SPRING-LINE gaskets are available in bright tin, bright copper and bright nickel finishes. Standard length (16 inch, 406 mm) and custom length strips are available in a wide variety of cross sections. For low compression grounding contacts, individual fingers are available with pressure sensitive adhesive for convenient pick-and-stick application.
SPRING-LINE stainless steel card cage gaskets
Designed to provide EMI shielding to the expansion slot area of PC and Server chassis. Chomerics' standard card cage series is available for PCI/EISA slot configurations from 1 to 10. The gaskets can also be modified to include additional slots and variable pitch designs. Designed for cost effectiveness and ease of installation, Chomerics' card cage gaskets fit into most existing chassis with-out modifications. The contact fingers are designed to minimize any snagging during the installation of cards. SPRING-LINE card cage gaskets are available in both standard and custom configurations, including tin-plating, to help meet demanding shielding requirements.
METALEX™ - EMI Frame Gaskets and Strips
These frame-mounted gaskets incorporate a length of MESH STRIP gasketing (with or without elastomer core), securely crimped into the edge of extruded aluminum mounting frames. They are available as ready-to-mount welded aluminum frames, fabricated lengths, or standard 7.5 ft. lengths. In addition to allowing simple mechanical mounting, the aluminum frames function as positive compression stops, preventing over-compression of the gaskets.
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Leader Tech's oriented wire gaskets are fabricated using individual wires in a silicone solid or silicone sponge Elastomer. The wire provides the EMI shielding and the Elastomer provides the environmental seal.
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Technical files
GT 1000
Silver plated
copper
Cu/Ag
GT 2020
Silver plated
copper
Ag
GT 3100
Silver plated
copper
Ni/C
GT 5080
Silver plated
copper
Al
GT 1007
Silver plated copper
fluorosilicone
Cu/Ag
GT 2024
Silver plated
copper
Ag
GT 3107
Silver plated
copper
Ni/C
GT 5087
Silver plated
copper
Al
GT 1015
Silver plated
copper
Cu/Ag
GT 2027
Silver conductive
fluorosilicone
Ag
GT 5000
Silver plated
aluminium
Al/Ag
BL 10000
BL 10000-50SH
Conductive
Carbone
GT 2000
Pure silver
Ag
GT 2401
Silver conductive
elastomer
Ag
GT 5007
Fluorosilicone
Silver plated
aluminium
Al/Ag
BL 10007
Fluorosilicone
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A large and full range of solutions with track system,
to resolve EMI/RFI problems.
"Shielded" ZIPPER-TECHNIK is a quick, effective and economical way to solve many interference problems which require shielding to reduce the effects of EMI/RFI especially in wire and cable applications.
Most standard ZIPPER-TECHNIK Jacket materials can be combined with a choice of shielding materials (laminated or sewn inside), to provide a versatile shielding system to meet or exceed almost any requirement.
All ZIPPER-TECHNIK shielding includes a patented, 360° shielding and grounding construction.
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Beryllium Copper makes an ideal gasket material due to its high
conductivity giving good shielding effectiveness. Excellent spring
features and resistance to compression set make them ideal for
high cycle applications in both compression and in a wiping action.
Various profiles are available to meet design needs and gaps of
0.25 to 10.2mm can be accommodated.
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Commonly used for enclosure doors, shielded room doors and architectural seams where wiping action and large compression distances are needed.
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Due to their outstanding material
and electrical characteristics,
beryllium copper finger of different
shapes and dimension are used in
the following industries:
Broadcasting, telecommunications
industrial control, measuring and
instrumentation, aerospace
technology, nuclear physics and
data processing. Contact fingers and
rings made of beryllium copper are
used at all ratio and microwave
frequencies, for instance as contacts
to valves and tuning components as
well as for shielding.
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