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??Various formula used in the production of rubber o-ring rubber, under the compression state produces compression stress relaxation phenomenon, at this point, the compression stress

??As the growth of the time. Use the longer, the greater the amount of compression ratio and stretch, is produced by rubber stress relaxation and the greater the stress drop, so that the elasticity of rubber o-ring, losing the ability to seal. Therefore, under the condition of allowing the use of, try to reduce the compression ratio is desirable. Increase the section size of the rubber o-ring is the most simple way to reduce the compression ratio, but it will be a increase of structure size.

??The extent of the rubber o-ring cross section deformation, but also depends on the hardness of the rubber o-ring material. Under the same tensile, hardness of the rubber o-ring, its cross section height also reduce more, from this point, should be in accordance with the conditions of use as far as possible choose low hardness material. Under the action of liquid pressure and tension, the rubber material of the rubber O ring will gradually occur plastic deformation, the cross section height will be reduced accordingly, so that the final loss of sealing ability.

??Xin HuaXu rubber products company share!