SOFT-SHIELD 5000 Series EMI gaskets are designed to meet the stringent shielding and mechanical performance requirements of today’s commercial electronic enclosures, medical electronics, factory automation equipment, reprographics and grounding applications. A growing number of standard profiles and sizes provide flexibility when selecting a gasket for a specific application. Custom profiles or sizes can also be produced.

Each SOFT-SHIELD 5000 Series gasket consists of an electrically conductivemore
Unit of Measure

Jacket Type

 Nickel-plated nylon rip-stop fabric

PSA Tape Backing

 PSA tape

Gasket Service Rating

 General duty (urethane foam core)

Profile Number

 74029

Height

 0.375 in9.53 mm

Width

 0.500 in12.70 mm

Conductive Pressure-Sensitive Adhesive

 Non-conductive adhesive

Operating Temperature Range

 –40 to 70 ºC

Test Method Compression Set

 ASTM D3574 (modified)

Compression Set

 < 15 %

Test Method Electrical Conductivity

 CEPS-0002

Electrical Conductivity Max.

 0.1 O/sq

Test Method Adhesive Peel Strength

 ASTM D1000 (90° Bend)

Adhesive Peel Strength Min.

 4 lb/in0.7 N/mm

Product Forms

 SQ, REC., D, C, P, L and Custom

Typical Applications

 Doors, Panels, Seams, Faceplates, Ground Pads

Method of Manufacture

 Dispensed foam

Jacket Material

 Ni/Ag Plated rip-stop Nylon

Foam

 High Performance Urethane Foam

Attachment Method (PSA)

 Non conductive, high temp, high tack, closed cell, acrylic PSA

Baseline EMI Shielding

 90 dB

Shielding Effectiveness After Cycling

 Better

Softness

 Better

Compression Set ASTM D395 - Method B

 70 ºC - 10 %

RoHS Compliant

 Yes

Configurations
Gaskets are supplied in standard 8-foot lengths or cut-to-length strips. Depending on the profile, gasketing can also be supplied on spools. For rapid peel-and-stick grounding applications, the material is supplied as kiss-cut parts on polyester film release backers, or as individual pieces. Chomerics also fabricates single-piece, spliced picture frame gaskets from continuous lengths. With their fully jacketed surfaces, these gaskets are ideally suited for low closure force applications that require 360° EMI shielding, or the ease of installing a onepiece gasket.

Chomerics’ Applications Engineering department welcomes the opportunity to provide assistance with design and prototype fabrication of SOFT-SHIELD 5000 Series EMI Gaskets in custom profiles.

Typical Application-Ready Solutions
Mobile phone grounding

Conditions and Requirements
  • minimize thru-resistance for optimum grounding
  • maximum 0.25 x 0.25 inch footprint
  • accommodate 0.040 inch variation in gap
  • snap-in plastic cover with 2 lb max. load at 50% gasket deflection
  • high volume application


    • SOFT-SHIELD Gasket Solution
  • highly conductive jacket offers low resistance
  • standard 6 x 6 mm profile, no customization required
  • meets low closure force requirements
  • kiss-cut parts on release paper allow quick peel-and-stick installation


    • Interface between aluminum casting and plastic antenna housing

    Conditions and Requirements
  • overcome 45 dB leakage problem
  • replace multiple strips with single-piece design for ease of installation
  • 0.030 inch flatness tolerance on component mating surfaces
  • low cost a priority


    • SOFT-SHIELD Gasket Solution
  • effectively

    • Typical Tolerances
    Typical cross section tolerances:
    ±0.010 in. (0.25 mm) for all dimensions up to 0.04 in. (1.02 mm)
    ±0.020 in. (0.51 mm) for all dimensions above 0.04 in. (1.02 mm)
    Detailed part drawings are available on request.

    Typical length tolerances:
    0.10 to 6.0 in. (0.25 to 15.2 cm) ± 0.030 in. (0.76 mm)
    6.1 to 18.0 in. (15.5 to 45.7 cm) ± 0.060 in. (1.52 mm)
    18.1 to 42.0 in. (46.0 to 106.7 cm) ± 0.075 in. (1.91 mm)
    42.1 to 96.0 in. (107.0 to 243.8 cm) ± 0.090 in. (2.29 mm)

    Typical kiss-cut tolerances:
    0.04 to 0.12 in. (1.02 to 3.05 mm) ± 0.015 in. (0.38 mm)
    0.121 to 0.40 in. (3.07 to 10.16 mm) ± 0.035 in. (0.89 mm)