How to choose the right flange gasket?

According to industry standards, the configuration ratio of flanges and gaskets is generally 1:1, that is, each flange needs to be equipped with a gasket to ensure the quality and safety of the connection. How to choose the appropriate flange gasket?

The functions of flanges and gaskets:
Pipe flange is a component that connects two pipes, and their connection can achieve sealing and support functions. A gasket is a sealing material used to fill the gaps between connected parts. It can prevent the leakage of media and the intrusion of external impurities, and also plays a buffering and shock-absorbing role.

Gasket type selection:

Normally, our gaskets can be classified according to their materials, such as metal gaskets, non-metallic gaskets, ceramic gaskets, etc. Therefore, when selecting an appropriate gasket, you need to consider the environment in which it is located and select the appropriate gasket type to ensure its performance and provide more favorable conditions for the flange and gasket configuration.

Select the gasket size according to the standard:
Selecting the appropriate gasket size is one of the keys to ensuring that it will accurately fit the required flange specifications. When selecting gaskets, we must choose according to the size requirements stipulated in the standard. Otherwise, gaskets that are too small or too large will cause problems such as leakage.

Consider the operating pressure of the gasket:
When configuring flanges and gaskets, we should also consider the working pressure of the gasket. According to different working pressures, we can choose gaskets of different thicknesses. When the pressure is high, we should use gaskets with larger thickness to ensure their safety and reliability.

Recommended configuration ratio of flange and gasket:
Generally speaking, each flange needs to be matched with a gasket to ensure the quality and safety of the connection. Therefore, the most common configuration ratio of flange to gasket is 1:1. In special circumstances, such as high temperature, high pressure, chemically corrosive environments, etc., multi-layer gaskets or metal gaskets will be used to replace ordinary gaskets.

In addition, the material, thickness, hardness and other factors of the gasket need to be considered when selecting the gasket to ensure that the gasket can adapt to the needs of the pipeline environment and ensure the sealing of the connection.

Conclusion:

The selection and matching of flange gaskets and flanges requires comprehensive consideration from the types of gaskets, pipe flange size, flange material, working pressure, etc., so that they can better perform their functions. In actual use, we must also pay attention to making reasonable selections and adjustments based on different environments and specifications to ensure that flanges and gaskets can operate safely and reliably.

Read more: Pipe and flange connection or Can pipe elbows and flanges be connected directly?