Electric induction and coupling can cause electromagnetic interference. Therefore, a lot of equipment that has such electrical functions should have a gasket to avoid affecting critical applications such as aerospace electronics, military, medical and vehicular systems. Anyone who intends to buy such a seal should consider a few aspects. The following are guidelines for buying EMI seals to consider.
Ensure that it can withstand high temperatures. You have to confirm whether the gasket can accommodate high temperatures if the device it is shielding generates a lot of temperatures. Therefore, you have to choose a material that can withstand the respective heat. You have to acknowledge the maximum temperature provided by the maker to make a reasonable choice.
Ensure that it can accommodate pressure. Some applications lead to tension. Such phenomenon requires a reliable gasket that can withstand it. There are varieties of materials that one can use depending on the amount of pressure induced. The best types of seals include the wire mesh types and the copper fingers which release force to the environment.
Determine which stage of manufacture is ideal to use the gasket. Clients who prefer custom-making the seals should consider which manufacture stage is suitable for the product. The best period is during the design since you can leave enough flange to fit the gasket. You can choose different types of mounting starting from clip-on, slot, channel and the pressure sensitive clips.
Ensure that the gasket can protect dust and moisture. Most application that produces EMI has exposure to dust and moisture. Therefore, one should use relevant designs and materials that can protect the device from these elements. One can use a rubber sealing, conductive elastomer or the conductive fabric. All of these types provide a tight seal that cannot allow entry of dust or moisture.
Take note of material compatibility. When two metals come into contact, there are chances of having galvanic corrosion if there is the presence of galvanic corrosion and salt spray. Therefore, it is recommendable to choose metals that has a different galvanic scale compared with the metal that one intends to enclose. One of the typical examples includes using a nickel coated enclosure to contact a coated graphite in a silicone elastomer seal.
Determine which frequencies you want to shield. Most aerospace and military applications require a shield that can inhibit magnetic waves. Therefore, using a knitted wire mesh or copper fingers can be a perfect match to release the induced current within the guard. For low frequencies, one should use a solid metal while electric can fit in any gasket to their limitation.
Acquaint with the maintenance process. Ensure that the gasket that you decide on has a mechanism to open and close it when you want to do any maintenance. Make sure that you clean it periodically and replace it when it has worn out completely. You should also use a compression stop or collar to avoid breaking when the gasket stays for too long without maintenance.
Ensure that it can withstand high temperatures. You have to confirm whether the gasket can accommodate high temperatures if the device it is shielding generates a lot of temperatures. Therefore, you have to choose a material that can withstand the respective heat. You have to acknowledge the maximum temperature provided by the maker to make a reasonable choice.
Ensure that it can accommodate pressure. Some applications lead to tension. Such phenomenon requires a reliable gasket that can withstand it. There are varieties of materials that one can use depending on the amount of pressure induced. The best types of seals include the wire mesh types and the copper fingers which release force to the environment.
Determine which stage of manufacture is ideal to use the gasket. Clients who prefer custom-making the seals should consider which manufacture stage is suitable for the product. The best period is during the design since you can leave enough flange to fit the gasket. You can choose different types of mounting starting from clip-on, slot, channel and the pressure sensitive clips.
Ensure that the gasket can protect dust and moisture. Most application that produces EMI has exposure to dust and moisture. Therefore, one should use relevant designs and materials that can protect the device from these elements. One can use a rubber sealing, conductive elastomer or the conductive fabric. All of these types provide a tight seal that cannot allow entry of dust or moisture.
Take note of material compatibility. When two metals come into contact, there are chances of having galvanic corrosion if there is the presence of galvanic corrosion and salt spray. Therefore, it is recommendable to choose metals that has a different galvanic scale compared with the metal that one intends to enclose. One of the typical examples includes using a nickel coated enclosure to contact a coated graphite in a silicone elastomer seal.
Determine which frequencies you want to shield. Most aerospace and military applications require a shield that can inhibit magnetic waves. Therefore, using a knitted wire mesh or copper fingers can be a perfect match to release the induced current within the guard. For low frequencies, one should use a solid metal while electric can fit in any gasket to their limitation.
Acquaint with the maintenance process. Ensure that the gasket that you decide on has a mechanism to open and close it when you want to do any maintenance. Make sure that you clean it periodically and replace it when it has worn out completely. You should also use a compression stop or collar to avoid breaking when the gasket stays for too long without maintenance.
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