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ISO 9001:2008 - AS9100:2009 REV C CERTIFICATION

EMI/RFI Shielding

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3000 Series Twinseal Gaskets EMI Shielding & Environmental Seal

Twinseal Gaskets
3000 Series Twinseal EMI Shielding Gaskets Elastomer Core

Twinseal gaskets provide an efficient environmental seal in addition to the EMI shielding from the attached mesh gasket. The mesh gasket is typically supplied in a rectangular profile and is available in all the standard materials and configurations found here. The environmental seal is available in either neoprene or silicone and can be produced with double-sided pressure sensitive tape for stick-on mounting or thru holes for fasteners. Picture frame configurations can be specified as a custom part with the environmental seal bonded at the corners.

NOTE: Standard cross section dimensions for EMI shielding wire mesh are those of the elastomer and due allowance must be made for mesh thickness.

See "How to Order" below.
For sizes not shown, please ask!

Design Guide for Custom Parts

  • Accurate steel rule dies are used for cutting the environmental seal. Accuracy of the finished part is influenced by the softness of the material.
  • Linear tolerances for sponge materials are ± 0.031 in. and ± 0.016 in. for solid per 6 in. run.
  • Linear tolerances for sponge materials are ± 0.031 in. and ± 0.016 in. for solid per 6 in. run.
  • Linear tolerances for sponge materials are ± 0.031 in. and ± 0.016 in. for solid per 6 in. run.
  • Minimum hole diameter should be equal to the material thickness.
  • Compression stops to prevent over compression of the gasket can be specified. Compression stops are available in sheet metal gauges. See Fig. 1.
  • Environmental seal dimensions A and B and mesh gasket dimensions C and D must be included in the specification for custom parts
  • Fig.1Compression Stop Drawing

How to Order

How To Order
Style 1 Twinseal

Style 2 Twinseal

Style 3 Twinseal


Standard Sizes


Dimensions (in.)   Part Number
 A, C B   D
.062
.062
.062

.062
.093
.093

.093
.093
.093

.125
.125
.125

.125
.125
.125

.125
.125
.125

.125
.125
.188

.188
.188
.188

.188
.188
.188

.250
.250
.250

.250
.250
.375

.375
.375
 .250
.375
.500

.625
.250
.375

.500
.625
.750

.125
.188
.250

.250
.375
.500

.500
.500
.625

.750
.875
.188

.250
.375
.375

.500
.625
.750

.250
.3125
.500

.625
.750
.250

.500
.750
.125
.125
.125

.125
.125
.125

.125
.125
.125

.125
.188
.125

.250
.125
.125

.250
.500
.125

.125
.125
.125

.125
.125
.250

.125
.125
.250

.125
.125
.125

.125
.125
.125

.250
.250
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30XE - YYZA - 0026

30XE - YYZA - 0034
30XE - YYZA - 0027
30XE - YYZA - 0028

30XE - YYZA - 0029
30XE - YYZA - 0030
Tolerances: Elastomer: ±0.031 in.
Mesh ±0.031 in. 
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