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D-Shaped Clip Gaskets

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Laird Technologies specializes in quick turnaround of custom shapes and sizes of EMI shielding gaskets. If you don’t find exactly what you need, our engineers will help you design the right solution to your shielding problem.

A sampling for standard profiles are shown; custom configurations and sizes can be designed to meet your specific requirements.


  • Shielding effectiveness of >100dB across a wide spectrum offrequencies (MIL-STD 285 mod.) (See Shielding Effectiveness chart under More Images).
  • Extremely low compression forces allow for use of lightermaterials (See Force Displacement Resistance chart under More Image).
  • Low Surface Resistivity of <0.07 ohms/squareprovides improved conductivity (ASTM F390).
  • Wide range of flame retardant gaskets available(UL recognized per UL94 V0 or UL94 HB). UL yellow cardsavailable on request.
  • Abrasion resistant metallized fabrics show virtually no degradationin shielding performance after 1,000,000 cycles (ASTMD3886).
  • Urethane & Thermoplastic Elastomer (TPE) cores provide lowcompression set ensuring long-term reliability of gasketperformance. Contact Engineering for profile specific data.
  • Service temperatures from -40°F to 158°F(-40°C to 70°C).
  • Available in Nickel/Copper (Ni/Cu) and Tin/Copper (Sn/Cu) toensure galvanic compatibility with a wide variety of host materials.Both versions display no significant performance degradationafter environmental exposure per the Accelerated AgingTest (ASTM B845).
  • Prototype samples can be provided quickly utilizing laser technology,CAD/CAM equipment, and customer supplied drawingsin DWG®, DXF®, IGS, PRT®, DRW®, STP®, and CT® file formats.
  • Profile and I/O gaskets are available with a variety of pressuresensitive adhesive (PSA) tapes, including Easy Peel® with extrawide release liner to facilitate quick assembly.
  • Profile gaskets can be cut to specified lengths,kiss-cut on release liner, or mitered to formframe configurations.
  • Fabric-Over-Foam gaskets are RoHS compliant.

Item #

Item Name



Dimension L1

4110 D-Shaped Clip Gaskets 0.203 inches 0.250 inches 0.125 inches
4111 D-Shaped Clip Gaskets 0.243 inches 0.250 inches 0.165 inches
4039 D-Shaped Clip Gaskets 0.304 inches 0.480 inches 0.195 inches
4033 D-Shaped Clip Gaskets 0.350 inches 0.480 inches 0.240 inches
4121 D-Shaped Clip Gaskets 0.358 inches 0.250 inches 0.280 inches
4040 D-Shaped Clip Gaskets 0.410 inches 0.480 inches 0.300 inches
4043 D-Shaped Clip Gaskets 0.430 inches 0.490 inches 0.310 inches
4041 D-Shaped Clip Gaskets 0.568 inches 0.480 inches 0.458 inches


·  Shielding Effectiveness

·  Product - D Shaped Cilp - Dimensional Drawing

·  Force Displacement Resistance