Selecting a gasket for a particular application can be challenging at times since innovations, machineries and technologies have evolved recently. Flanged connections are associated with numerous varieties of gasket options that should be taken under consideration. Even few years back, one could choose the right gasket by considering TAMP (temperature, applications, media and pressure). But now, it has become more intricate to choose the right one because you need to pay special attention to these features.
These gaskets are tiny instruments that play a major role in sealing joints. The sealing can form the essential barrier between external and internal elements. They can prevent leakage and fill small gaps between the components. That’s why the mechanics and repairmen concentrate on the gaskets carefully. A gasket can either be a rubber gasket, metal gasket or plastic gasket. Here are the factors that you need to consider in selecting a gasket.
Low Temperature Sustainability
Consider the gasket’s low temperature duty. Make sure that the instrument is dry while installing. A suitable temperature should be maintained while assembling the flange. The flange and bolt should be working perfectly at low temperature. An easy way to cut off most gaskets is to consider the temperature of fluid at the joint. The most important feature of a gasket is its sustainability despite of variations in temperature.
Choosing the right size and design will ensure proper sealing of a gasket. Gaskets made of sheets can fit small diameters, lower pressures and temperatures. Metallic and semi-metallic gaskets work better in larger seals, higher pressure and temperatures. If the temperature is above 200 degree Celsius and the pressure is above 50 bars, you should be more careful about choosing a gasket. Besides, you should determine the thickness preference carefully. Thinner instruments can load much bear than thicker ones. But the thickness should be maintained at a suitable level so that they can allow deformations, irregularities and roughness of the surfaces.
Application and Implementation of the Gasket
Selecting a gasket requires you to understand the application and the extent of load. The number, size and grade of the bolts are the most important determinants. You can calculate compressed surface area from the gasket’s dimensions. You should also measure the stress factor.
Determining the Fluid Media
Different fluids are invariably used for different purposes in this industry. It is impossible to make recommendations for these fluids individually. However, most fluids work with common gaskets and the compatibility is not a significant issue unless you’re handling a special fluid with special characteristics. While purchasing, you can seek additional information from the manufacturers.
Limitations in Steam
The steam load and compatibility should be considered carefully. Steam duty is one of the common gasket applications. Steam is a very powerful hydrolyser making the choice difficult for the clients. Steam causes an increase in temperature and pressure at the same time. Gaskets need reduced operational temperature under stress. Some latest products associate hardening when it comes in contact with steam. Besides, you should also consider flange designs, required service durability, assembling techniques, maintenance and many more issues.
Selecting a gasket may need you to consult with experts. Research, learn and compare comprehensively before making a purchase. Consider these factors in selecting a gasket for you to choose the right one and to provide proper sealing of machine parts.