EnglishViews: 2454 Author: Site Editor Publish Time: 2020-06-05 Origin: Site
Gasket selection is not an easy task, especially in the selection of gasket sealing materials, there are many factors to consider. The variables that appear at the flange connection seem to be endless. All these uncertain factors affect the sealing effect of the gasket. Therefore, various parameters must be considered comprehensively in order to make an appropriate choice.
In most selection processes, the temperature of the fluid is the primary consideration. This will quickly narrow the selection range, especially from 200 ° F (95 ° C) to 1000 ° F (540 ° C). When the operating temperature of the system reaches the limit of the maximum continuous operating temperature of a particular gasket material, a higher level of material should be selected. This should also be the case at certain low temperatures.
The most important parameters in the application are the type of flange and the bolts used. The size, number and level of bolts in the application determine the payload. The effective area to be compacted is calculated from the contact size of the gasket. The effective gasket sealing pressure can be derived from the load of the bolt and the contact surface of the gasket. Without this parameter, it would be impossible to make the best choice among many materials.
There are tens of thousands of fluids in the medium, and the corrosiveness, oxidation and permeability of various fluids are very different. The material must be selected according to these characteristics when selecting a model. In addition, the cleaning of the system must also be considered to prevent the erosion of the gasket by the cleaning fluid.
Each type of gasket has its maximum limit pressure. The pressure-bearing performance of the gasket decreases as the thickness of the material increases. The thinner the material, the greater the pressure-bearing capacity. The selection must be based on the pressure of the fluid in the system. If the pressure often fluctuates sharply, you need to know the details to make a choice.
The so-called PT value is the product of pressure (P) and temperature (T). The pressure resistance of each gasket material is different at different temperatures and must be considered comprehensively. In general, the manufacturer of the gasket will give the maximum PT value of the material.
Finally, to ensure the material of the seals, take a look at the product name, factory name, specifications, origin, color, delivery date on the sealant product packaging; whether there is a certificate of conformity, quality assurance, product inspection report; see the use of sealant Methods, precautions, etc. Whether the statement is clear and complete;
When buying, try to choose brand sealing materials to ensure quality, especially in these brands of sealant packaging, there will be specific product descriptions to facilitate buyers to distinguish functions. Hange always provides you with all kinds of high-quality seals.
