EMI gaskets variations

            

                The primary goal of an EMI shielding gasket is to seal an electronic enclosure to prevent transmission of electromagnetic interference. Improper design of the seal or enclosure mating flanges can result in a failure. Several mechanical design issues must be considered for the proper mating of an EMI gasket with the flanges of an electronic enclosure. Determining the effectiveness of a system overall EMI shielding needs involves understanding the radiated emission spectrum of the equipment, and the specifications the unit must meet. Various EMI shielding gasket types provide different levels of shielding effectiveness across the frequency range of 10 kHz to 20 GHz, such as the Soft-Shield 5000 materials.

Many EMI gasket variations provide a 'best fit' for different operating environmental conditions. Exposure to high and low temperatures, wind and rain, salt spray, solvents used in cleaning and plating, and other conditions severely affect the life of an EMI shielding gasket. EMI gaskets require some amount of compressive force to function properly.As a result of this load, the material will decrease in height (deflect).Many commercial-grade gaskets must deflect 30-40% under low closure forces to properly maintain contact with mating flanges.

Gasket material subjected to compressive forces for an extended time causes 'deflection' to remain when the load is removed. Compression set is an important property in designs where the EMI gasket will be compressed and released regularly while in service in enclosure doors and access panels. EMI shielding gaskets provide conductive pathways that electrically bond system components to a common ground. The gaskets serve as low impedance conductors to ensure the reliability of an enclosure.

The method of installing an EMI shielding gasket can be a major factor in determining shielding costs. Gaskets can be installed using pressure-sensitive adhesives, fasteners, or epoxies, or by press-fitting into grooves. Some gaskets are molded in place on the enclosure flange or on a plastic spacer frame. Be it for various purposes in aerospace, automotive electronics, computers, data communications, general electronics, medical equipment, military, network equipment or telecommunications, Darcoid Nor-Cal Seals provides electromagnetic interference shielding gaskets and seals to more high-tech industries in more places around the world than any other EMI specialist. Darcoid Nor-Cal Seal is a world renowned manufacturer of sealing solutions and a wide range of accessories like die cut gaskets and spliced o-rings, and a distributor for the top manufacturers of seals, gaskets and rubber products.

Darcoid Nor-Cal Seal, an endeavor that specializes in supplying all kinds of sealing solutions, offers a broad range of products in Electro Magnetic Interference shielding applications like EMI shielded gaskets and seals. These products work by containing or excluding electromagnetic energy in RF modules and components, waveguides and structural enclosures.

Darcoid Nor-Cal Seal is into supplying world class EMI shielding Gaskets and Seals, O-Rings, Molded Rubber Parts, EMI/RFI Shielding products like Adhesives, Sealants, Conductive Compounds, Conductive Elastomer Gaskets, Conductive Tapes and laminates, Conductive Grounding Tabs, Metal EMI products, Parker O-Rings & D-Rings, Shielded Windows, Shielded EMI Vents, Thermal Grease & Gap fillers, Wave Guides, Wire Mesh Gaskets and many more.

The Electro Magnetic Interference shielded gaskets and seals come in a wide range with their volume resistance in order to achieve the desired shielding effectiveness. Products are available as non-hardening caulking compounds, silicone or vinyl based sheets as well as conductive adhesives and coatings. Darcoid is an expert in supply chain management and value added distribution services, resulting in high quality seals and good cost value solution for your company.