How Does The Standard O Rings Increase Its Viscosity And Tightness?

- Aug 02, 2017-

How does the Standard O Rings increase its viscosity and tightness?
Standard O Rings to increase viscosity and tightness:
(1) to improve the viscosity of the media can reduce the leakage, the greater the better viscosity. Of course, increased viscosity will increase the power loss. At present, lubrication is often used to increase the medium viscosity method to reduce leakage. Such as semi-fluid grease, the viscosity between the oil and fat, fat oil and so on.
(2) reduce the gap, increase the width of the joint surface. The size of the joint gap is the main cause of leakage, it is not only with the metal surface processing accuracy, but also with the flatness. The effect of flatness is often greater than the machining accuracy, flatness is poor, the gap increases, and its relationship with the leakage is greater than the third-party form increases, that is, the gap increased by 1 times the leakage will increase more than 7 times The To reduce leakage, the most important research object is to reduce the gap and increase the width of the joint surface.
(3) to reduce the pressure inside and outside, so that the box with the outside world. This method is applied more, such as in the gear box above the lid has a filler hole, when the gear in the high-speed rotation, the box temperature, the box pressure gradually increased, the oil to speed up the leak. If the oil hole in a tube connected with the outside air, so that the pressure difference between the two, the leakage will be better.
 Standard O Rings manufacturers in the O-ring groove installed in the moderate compression of the cross-section of the O-shaped (round) Standard O Rings. Can be used as oil, water, air, gas and other liquid and gas sealed use. There are two types of static and sports. Compared with other Standard O Rings, with the following superior performance:
1, sealed parts of the structure is simple, compact installation location, light weight.
2, with their own sealing effect, and sometimes only a seal will be able to complete the sealing effect.
3, good sealing performance, used as a fixed seal when almost no leakage, as a sports seal, only when the speed will be slightly leaked.
4, the movement of friction is very small, for the occasion of the pressure can also be adapted.
5, size and groove has been standardized, low cost, easy to use and purchase.
 Standard O Rings sealing effect is a combination of product design, sealing material selection, parts processing accuracy, mechanical installation technology and the use of maintenance and other comprehensive effects. And once the sealing effect is not very good, then there will be leakage, and in the seal before the seal manufacturers first to a comprehensive look at what is the real reason for the occurrence of leakage?
(1) the installation method is not correct
When the installation axis, hole eccentricity is too large, the seal is damaged, or in the installation, because the method is not correct damage to the seal.
(2) the design is unreasonable
At the beginning of the design did not take into account the sealing problem, the designers are not familiar with the sealing technology, in the design, select the seal structure is not considered, the design is unreasonable.
(3) equipment manufacturing bad
In the process of processing the Standard O Rings processing quality is poor, with pores, trachoma, cracks. If the processing method is not correct, the roughness of the Standard O Rings is too high, too low, or does not meet the processing requirements specified in the drawing.

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