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SPRINGMESH™ Highly Resilient EMI Mesh Gasket

SPRINGMESH™ Highly Resilient EMI Mesh Gasket

SPRINGMESH™ Highly Resilient EMI Mesh Gasket

Product catalog summary
Overview
This technical bulletin from Chomerics, a division of Parker Hannifin Corp., focuses on EMI shielding solutions, specifically the SPRINGMESH™ Highly Resilient EMI Mesh Gasket. The document outlines the features, benefits, applications, and specifications of this product.

Product Features
The SPRINGMESH™ gasket is a knitted wire mesh technology that provides high resilience and excellent EMI shielding. Key features include:
  • Compression set of less than 30% when compressed up to 80% of its original diameter.
  • Made from tin-plated-steel wire, offering high electrical conductivity.
  • Hollow knitted wire design without beryllium.
  • Available in standard diameters from 0.093 in. (2.36 mm) to 0.375 in. (9.53 mm).

Benefits
  • Economical and high resiliency.
  • Excellent shielding properties with electrical stability over time.
  • Available in bulk or cut-to-length parts, with terminated ends to prevent fraying.

Applications
The SPRINGMESH gasket is ideal for use in:
  • Cast CATV device housings with outboard environmental seals.
  • NEMA enclosures.
  • Industrial enclosures.

Design Features
The gasket is constructed from 0.004 in. (0.11 mm) diameter tin-plated-steel wire, typically in a double-layer mesh for optimal EMI shielding and compression-deflection performance.

Specifications
Standard diameters and tolerances are provided for various part numbers, with custom sizes available upon request. The document includes detailed graphs illustrating the gasket's performance in terms of shielding effectiveness, compression/deflection, and electrical resistance under deflection.

Ordering Information
SPRINGMESH gasketing is available in bulk and can be cut to length. Orders can be placed using specific part numbers, with additional diameters available upon request.
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Catalog excerpts

SPRINGMESH™ Highly Resilient EMI Mesh Gasket-1

Seals • Conductive elastomers • Conductive coatings, • Cable shielding products • Shielded vents and • Commercial and military LEADER IN EMI SHIELDING INNOVATION, SPRINGMESH™ Highly SPRINGMESH™ knitted wire mesh technology offers the advantages of a mesh over elastomer core without the bulk or expense of a core. This knitted wire technique results in a highly resilient EMI gasket, capable of being compressed over 70% with remarkable recovery. The gasket offers a shielding effectiveness similar to that of a conductive elastomer in a groove-mounting application (Figure 1). Another key feature of SPRINGMESH gaskets is the ability to achieve high deflection under low compressive loading forces (see Figures 2 and 3). Compression set is less than 30% after being deflected as much as 80%. Electrical contact resistance is extremely low, even at low deflection (see Figure 4). SPRINGMESH gaskets are especially suited for applications in die cast commercial electronic housings, such as CATV passive device boxes, which require high levels of shielding at low cost. Compared to stainless steel mesh gaskets, they are far more electrically conductive and offer up to 40 dB more shielding effectiveness. Spring properties are comparable to those of beryllium copper mesh gaskets. FEATURES • Compression set of less than 30% when compressed up to 80% of APPLICATIONS SPRINGMESH in a round configuration designed as a gasket-

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