What is the primary function of gaskets in piping?

The primary function of gaskets in piping systems is to seal the flange face. Gaskets are used to fill the space between two mating surfaces, ensuring that a tight seal is formed when the flanges are bolted together. This prevents leakage of fluids or gases under pressure, which is critical for maintaining system integrity and safety.

When two flanges are brought together, they create a joint that can be susceptible to leaks if not properly sealed. The gasket material compresses under the pressure of the bolt, which helps it conform to any imperfections in the flange surfaces. This compression is what creates the effective seal required to withstand the system’s operating pressures and temperatures.

In contrast, while gaskets may impact the distribution of weight or assist in stabilizing joints during thermal expansion, their primary and most crucial role is to ensure a leak-proof connection in piping systems. This is essential for the overall functionality and reliability of the piping system, especially in high-pressure applications.