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What is the basic requirement of rubber seal design? - - - - - - Dongguan DongSheng di sealing products co. , LTD

by:ORK      2020-07-14
Different devices is different to the requirement of rubber seal performance, when used in rubber seal design and type selection, should be determined according to the particular case is particular analysis and comparison. The performance of the sealing ring main requirements are as follows: 1, the leakage is allowed. At the request of the important in the design of rubber seals seal leakage, it is determined by the sealing ring USES. Guarantee the normal work of the equipment allowed by the leakage rate is called to allow leakage rate, allowing leakage rate generally decided on the basis of the condition of the equipment, there is no unified standard. 2, friction. Friction causes fever and wear of rubber seals sealing ring, sealing surface damage parts, even is the main cause of seal invalidation and leakage. Contact seal material of friction depends on the coefficient of friction and lubrication conditions. 3, wear and tear. Can cause friction wear, wear inevitably degrade the performance of the rubber seal, shorten the service life of machine. Wear on the surface of the sealing ring and the axis of rotation depends on the form of seal, rubber seal materials and lubricity of the fluid. Packing is bigger to the wear and tear of the shaft, especially when the medium containing abrasive wear faster. 4, size. Sealing device should as far as possible compact, structure limits shall be determined by the machine's overall in the feet. The rubber seal should be selected according to the working system of temperature, pressure and sealed medium types, corrosive, toxic, flammable and explosive, polluting such as density, viscosity and the shape of the sealing surface and other comprehensive consideration. In general, in normal temperature low pressure, choose nonmetal soft rubber sealing ring; Has a big fluctuations in temperature, pressure, choose high elastic sealing ring or self-tightening sealing ring; Under the condition of low temperature, corrosive medium or vacuum, should consider to choose with special performance of the sealing ring. 18 years seal factory, choose a different material can meet different high and low temperature resistance, high and low pressure resistance, abrasion resistance, acid and alkali and other chemical medium, corrosion resistance, aging, knight of the oil pressure and fatigue condition of the environment, can according to customer demand design suitable rubber sealing ring, welcome consulting more problems.
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