Compression set: When the liner for a long time under pressure, even if the pressure removed, it can not fully recover its original shape, which is the compression set. This feature frequently when the gasket is compressed, release (for example, door panels and events) to pay special attention.
Electrical stability: magnetic sealing gasket is provided between the metal low-impedance conductive path to achieve the purpose of shielding.A lot of people have consulted about how to purchase a green laser pointer. Therefore, the electrical stability to keep the shield for shielding effectiveness is very important.
Installation costs: electromagnetic gasket installation method is to determine a major factor in the cost of shielding. Padded liner itself costs include the cost of installation of time-cost, processing cost. In considering the liner costs, and comprehensive consideration of these factors.Comparison of commonly used magnetic sealing gasket
Wire mesh liner: This is one of the most commonly used magnetic sealing material. From a structural point, there is the whole wire, and hollow rubber core, three. Common wire materials: Monel alloy, beryllium copper, tin wire, etc. The shielding performance: the higher the shielding effectiveness at low frequencies, high frequency shielding effectiveness is low. Generally used in applications below 1GHz.
People usually confound the fundamental knowledge about green laser pointer.Main advantages / disadvantages: low price, easy to damage when excessive compression / high-frequency shielding effectiveness is low.
Conductive rubber: usually used in an environmental sealing requirements of the occasion. From the structure on the points, plates and strips are two types of hollow and solid material is divided into two. Plates have different thicknesses. Materials: silicone rubber mixed with copper, aluminum, silver, silver-plated copper, silver-plated aluminum, silver-plated glass powder and so on. The shielding performance: low-frequency shielding effectiveness of low and high frequency shielding effectiveness when high.
Main advantages / disadvantages: while providing electromagnetic sealing and environmental sealing. Hard, high prices, because the surface is relatively soft, and sometimes can not pierce the surface of the metal oxide layer, resulting in shielding effectiveness is very low.
Finger guard: usually used in the contact surface sliding contact situations. Many traits, the material is beryllium copper, but do different surface coating. Shielding properties of high-frequency, low-frequency shielding effectiveness is relatively high.
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