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Parker Chomerics EMI Shielding Foam-Based Gaskets

Parker Chomerics SOFT-SHEILD® Conductive Foam-Based Gaskets

Parker Chomerics product line family of SOFT-SHIELD EMI gaskets provides a selection of strip and sheet stock commercial EMI gasket solutions suitable for most all indoor EMI shielding and grounding applications. These products rely on the unique construction of a conductivity-plated fabric or wire mesh, wrapped or knitted over a low closure force urethane foam.

Advantages:

  • Low compression force
  • High Shielding effectiveness
  • No degradation of shielding effectiveness after 10,000+ deflection cycles or after accelerated aging
  • Ideal for commercial electronic enclosures, medical electronics and other general industrial applications
  • Available in many different standard shapes and sizes, with custom profiles also possible

Material Selection:

SOFT-SHIELD 3500 3700 3800 4800 4840 4850 4860
Shielding Effectiveness (dB) >100 >100 >100 95 60 95 95
Operating Temperature °F (°C) -40 to 158
(-40 to 70)
-40 to 257
(-40 to 125)
-40 to 257
(-40 to 125)
-40 to 158
(-40 to 70)
-40 to 158
(-40 to 70)
-40 to 158
(-40 to 70)
-40 to 257
(-40 to 125)
Product Type Fabric Over Foam Fabric Over Foam Fabric Over Foam Conductive Foam Conductive Foam Conductive Foam Conductive Foam
Flammability Rating UL 94 V-0 UL 94 V-0 UL 94 V-0 UL 94 HF-1 UL 94 V-0 UL 94 V-0 UL 94 V-0
Halogen Free Available Yes Yes Yes No No Yes
Cost $ $$ $$ $$ $ $$ $$$
Profiles Rectangular & Complex Rectangular Complex & Custom Custom Die Cut Custom Die Cut Custom Die Cut Custom Die Cut

SOFT-SHIELD® 3500

Plated-Fabric Wrapped Foam Economical EMI Shielding Gaskets for Electronics

  • >100 dB shielding effectiveness 20 MHz to 10 GHz
  • Low closure force for optimum performance
  • Low compression set of less than 15%
  • Over 250 profiles available to the market
  • Readily available in bulk, cut to length or with cut-outs / features
  • Available with or without non-conductive pressure sensitive adhesive (PSA)

Typical Applications

  • Server faceplates and blade cards
  • Electronic enclosures
  • Consumer electronics
  • Door seals
  • EMI window/vent seals
Typical Properties Value Test Method
Shielding Effectiveness 20MHz to 10 GHz > 100 (dB) CHO-TM-TP08
35% Compression Deflection lb/in (N/mm), (0.125 x 0.375 in. cross-section) <1 (<0.175) ASTM C165
Compression Set <15% ASTM D3574
Operating Temperature °F (°C) -40 to 158 (-40 to 70) --
Acrylic Adhesive Peel Strength, lb/in (N/mm) [Min. value] 4 (0.7) ASTM D1000
Recommended % Deflection Range 20 - 60% --
Flammability (See UL File Number E140244) V-0 UL 94
Shelf Life, month from date of sale 24 --
Storage Conditions, °F (°C) & 50% Relative Humidity 70 +/- 20 (21 +/- 10 --

SOFT-SHIELD® 3700

Low Closure Force, High Temperature, Conductive Fabric Over Foam EMI Shielding Gaskets

  • Operation range from -40° C to 125° C
  • Low-closure force, requires less than 1 lb./inch (0.175 N/mm)
  • Low compression set, <10%
  • UL 94 V-0 flammability rating
  • Excellent shielding effectiveness, >100 dB, 100 MHz – 3 GHz
  • Abrasion and shear resistant conductive fabric jacket
  • ROHS and REACH compliant
  • Low cost compared to industry alternative, i.e., fingerstock
  • Available in square and rectangular cross-sections, and can be cutto-length or die cut to readily fit a design
  • Available in standard 96” (240 mm) lengths

Typical Applications

  • Between screws and chassis
  • Panel, Cover, Vent & Door seals
  • Grounding tabs
  • Improved ground paths
Typical Properties Value Test Method
Shielding Effectiveness 20MHz to 10 GHz > 100 (dB) CHO-TM-TP08
35% Compression Deflection lb/in (N/mm), (0.125 x 0.375 in. cross-section) <1 (<0.175) ASTM C165
Compression Set <15% ASTM D3574
Operating Temperature °F (°C) -40 to 257 (-40 to 125) --
Acrylic Adhesive Peel Strength, lb/in (N/mm) [Min. value] 2 (0.35) ASTM D1000
Recommended % Deflection Range 20 - 50% --
Flammability (See UL File Number E140244) V-0 UL 94
Shelf Life, month from date of sale 12 --
Storage Conditions, °F (°C) & 50% Relative Humidity 70 +/- 20 (21 +/- 10) --

SOFT-SHIELD® 3800

Non-Rectangular Fabric Over Foam EMI Shielding Gaskets for High Temperature Applications

  • Operating temperature range up to 125°C
  • > 100 dB shielding effectiveness (20 MHz to 10 GHz)
  • Non-Rectangular and complex configurations
  • Economical shielding and grounding option
  • Low closure force
  • Low contact resistance
  • Custom profiles available upon request
  • UL 94 V-0, RoHS, and REACH Compliant
  • Low compression set
  • Abrasion and sheer resistant conductive wrap

Typical Applications

  • Server faceplates and inserts
  • Grounding applications
  • Electronics enclosures
  • Door seals
  • EMI window and vent gaskets
Typical Properties Value Test Method
Shielding Effectiveness 20MHz to 10 GHz > 100 (dB) CHO-TM-TP08
35% Compression Deflection lb/in (N/mm), (0.125 x 0.375 in. cross-section) <1 (<0.175) ASTM C165
Compression Set <10% ASTM D3574
Operating Temperature °F (°C) -40 to 125 (-40 to 257) --
Acrylic Adhesive Peel Strength, lb/in (N/mm) [Min. value] 2 (0.35) ASTM D1000
Recommended % Deflection Range 20 - 50% --
Flammability V-0 UL 94
Recommended Storage Conditions, °F (°C) & 50% Relative Humidity 70 +/- 20 (21 +/- 10) --
Possible extension of additional six (6) months. See Parker Chomerics Shelf Life Re-certification for Laminated Solutions document for procedure.

SOFT-SHIELD® 4800

Multi-Planar Electrically Conductive Foam EMI Shielding Gaskets

  • 95 dB shielding effectiveness from 20 MHz to 10 GHz • Stable electrical performance (through resistance) after multiple closure cycles
  • Low compression set of less than 15% • Available in bulk rolls or custom die cut shapes • Z-axis conductivity allows compartmental shielding • Offered with or without electrically conductive acrylic pressure sensitive adhesive (PSA)
  • RoHS, REACH and UL 94 HH-1 compliant

Typical Applications

  • I/O panels
  • Backplanes
  • Connectors
  • Aaccess panels
  • Rectangular/square strip gasket seals
Typical Properties Value Test Method
Shielding Effectiveness 20MHz to 10 GHz, dB Average: 95 CHO-TM-TP08
Compression-Deflection - 3mm thick sample, psi (kPa) to resemble 4850 presentation 25% - 2.2 (15.2), 50% - 4.2 (29.0) ASTM C165 (Modified)
Through-Resistance - 3mm thick sample (See Figure 1) ASTM D991
Gasket Compression Set % <15 ASTM D3574
Tensile Strength - 3mm thick sample, psi (MPa) 306 (2.1) ASTM D412 (Modified)
Electrically Conductive Acrylic PSA Peel Strength, oz/in 15 ASTM D1000 (Modified to 90° peel)
Recommended Deflection Range, % 15 - 50 --
Flammability HF-1 UL 94
NASA Outgassing, % TML (% CVCM) Not Tested ASTM E595
Operating Temperature °F (°C) -40 to 158 (-40 to 70) --
Recommended Storage Conditions, °F (°C) & 50% Relative Humidity 70 +/- 20 (21 +/- 10) --
Shelf Life with PSA, months from date of shipment 24* --
Possible extension of additional six (6) months. See Parker Chomerics Shelf Life Re-certification for Laminated Solutions document for procedure.

SOFT-SHIELD® 4840

Very Cost-Effective Electrically Conductive Foam Gaskets for High Volume Grounding Applications

  • Z-axis electrical conductivity
  • Good through resistance (<150 milliohms at 30% gasket deflection)
  • Stable electrical performance (through resistance) after multiple closure cycles
  • 60 dB typical shielding effectiveness from 20 MHz to 10 GHz
  • Low closure force (<2 PSI)
  • Low compression set (<15%)
  • Available in bulk rolls, cut sheets or custom die cut shapes
  • Non-nickel bearing material
  • RoHS & REACH compliant
  • UL 94 V-0 (Tested by Chomerics)

Typical Applications

  • High volume consumer electronic devices
  • Servers, desktop PCs, and laptops
  • I/O panels, backplanes, connectors, access panels and rectangular/square strip gasket seals
  • Telecom infrastructure rack and enclosure components
Typical Properties Value Test Method
Shielding Effectiveness 20MHz to 10 GHz, dB 60 CHO-TM-TP08
Compression-Deflection - 3mm thick sample, psi (kPa) 1.5 (10.3) @ 25%
2.0 (13.7) @ 50%
ASTM C165 (Modified)
Through-Resistance - 3mm thick sample (See Figure 1) ASTM D991
Gasket Compression Set % <15 ASTM D3574
Tensile Strength - 3mm thick sample, psi (MPa) 350 (2.4) ASTM D412 (Modified)
Electrically Conductive Acrylic PSA Peel Strength, oz/in 15 ASTM D1000 (Modified to 90° peel)
Recommended Deflection Range, % 15 - 50 --
Flammability (See UL File Number TBD) TBD UL 94
Operating Temperature °F (°C) -40 to 158
(-40 to 70)
--
Recommended Storage Conditions, °F (°C) & 50% Relative Humidity 70 +/- 20
(21 +/- 10)
--
Shelf Life with PSA, months from date of shipment 24 --
Shelf Life (no adhesive) Indefinite --
Possible extension of additional twelve (12) months. See Parker Chomerics Shelf Life Re-certification for Laminated Solutions document for procedure.

SOFT-SHIELD® 4850

Electrically Conductive Foam EMI Shielding Gaskets

  • 95 dB typical shielding effectiveness from 20 MHz to 10 GHz
  • Z-axis electrical conductivity
  • Excellent through resistance (<60 milliohms at 30% gasket deflection with pressure-sensitive adhesive)
  • Low closure force
  • Stable electrical performance (through resistance) after multiple closure cycles
  • Low compression set <15%
  • Available in bulk rolls, cut sheets or custom die cut shapes
  • Non-nickel bearing material

Typical Applications

  • Telecom Infrastructure rack and enclosure components
  • Servers and desktop PCs
  • I/O panels, backplanes, connectors, access panels and rectangular/square strip gasket seals
  • LCD/PDP large screen TVs
  • Indoor electronics applications requiring UL94 V-0 flammability rating
Typical Properties Value Test Method
Shielding Effectiveness 20MHz to 10 GHz, dB 60 CHO-TM-TP08
Compression-Deflection - 3mm thick sample, psi (kPa) 1.5 (10.3) @ 25%
2.0 (13.7) @ 50%
ASTM C165 (Modified)
Through-Resistance - 3mm thick sample (See Figure 1) ASTM D991
Gasket Compression Set % <15 ASTM D3574
Tensile Strength - 3mm thick sample, psi (MPa) 350 (2.4) ASTM D412 (Modified)
Electrically Conductive Acrylic PSA Peel Strength, oz/in 15 ASTM D1000 (Modified to 90° peel)
Recommended Deflection Range, % 15 - 50 --
Flammability (See UL File Number TBD) TBD UL 94
Operating Temperature °F (°C) -40 to 158
(-40 to 70)
--
Recommended Storage Conditions, °F (°C) & 50% Relative Humidity 70 +/- 20
(21 +/- 10)
--
Shelf Life with PSA, months from date of shipment 24 --
Shelf Life (no adhesive) Indefinite --
Possible extension of additional twelve (12) months. See Parker Chomerics Shelf Life Re-certification for Laminated Solutions document for procedure.

SOFT-SHIELD® 4860

High Temperature Electrically Conductive Foam EMI Shielding Gaskets

  • Maximum operating Temperature up to 125°C
  • 95 dB typical shielding effectiveness from 20 MHz to 10 GHz
  • Z-axis electrical conductivity
  • Excellent through resistance (<40 milliohms at 30% gasket deflection)
  • Low closure force
  • Stable electrical performance (through resistance) after multiple closure cycles
  • Low compression set <5%
  • Available in bulk rolls, cut sheets or custom die cut shapes
  • Halogen Free
  • Non-nickel bearing material
  • RoHS & REACH compliant
  • UL 94 V-0 (Tested by Chomerics)

Typical Applications

  • I/O panels, backplanes, connectors, access panels and rectangular/square strip gasket seals
  • Telecom Infrastructure rack and enclosure components
  • Servers and desktop PCs
  • LCD/PDP large screen TVs
  • Indoor electronics applications requiring UL94 V-0 rating
Typical Properties Value Test Method
Shielding Effectiveness 20MHz to 10 GHz, dB 60 CHO-TM-TP08
Compression-Deflection - 3mm thick sample, psi (kPa) 1.5 (10.3) @ 25%
2.0 (13.7) @ 50%
ASTM C165 (Modified)
Through-Resistance - 3mm thick sample (See Figure 1) ASTM D991
Gasket Compression Set % <15 ASTM D3574
Tensile Strength - 3mm thick sample, psi (MPa) 350 (2.4) ASTM D412 (Modified)
Electrically Conductive Acrylic PSA Peel Strength, oz/in 15 ASTM D1000 (Modified to 90° peel)
Recommended Deflection Range, % 15 - 50 --
Flammability (See UL File Number TBD) TBD UL 94
Operating Temperature °F (°C) -40 to 158
(-40 to 70)
--
Recommended Storage Conditions, °F (°C) & 50% Relative Humidity 70 +/- 20
(21 +/- 10)
--
Shelf Life with PSA, months from date of shipment 24 --
Shelf Life (no adhesive) Indefinite --
Possible extension of additional twelve (12) months. See Parker Chomerics Shelf Life Re-certification for Laminated Solutions document for procedure.

Parker Chomerics EMI Shielding

Conductive Elastomer Gaskets
Fingerstock Gaskets
Oriented Wire Gaskets
Wire Mesh Gaskets
Woven Mesh & Expanded Metal Foil

Conductive Elastomer Gaskets

Parker Chomerics electrically conductive elastomer gaskets are the superior choice for corrosion resistance, environmental sealing, and cost-effective EMI shielding. Available as molded sheets or parts, allowing for greater part complexity and detail but sometimes at a higher cost; or extruded into strips and either offered as cord stock at length or spliced (fused) to form a continuous seal.


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Fingerstock Gaskets


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Oriented Wire Gaskets


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Wire Mesh Gaskets


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Woven Mesh & Expanded Metal Foil


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