Maintenance Technician 2025 Complete Practice Test

The main function of a gasket in machinery is to seal between flanges. Gaskets are typically placed between two surfaces, such as the flanges of pipes or machinery components, to prevent the leakage of fluids or gases. They fill the microscopic imperfections on the surfaces, ensuring a tight seal that can withstand pressure and temperature variations. This sealing capability is crucial for maintaining the efficiency and safety of machinery operations.

While aiding heat transfer, reducing friction, and providing structural support are important functions in different contexts, they are not the primary purpose of gaskets. For instance, heat exchangers may utilize specific materials and designs to enhance heat transfer, while bearings and lubricants are used to reduce friction in moving parts. Structural support might be provided by components like brackets or frames rather than gaskets, which focus specifically on sealing.