New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

Which types of flange face gaskets are considered basic?

1. Only metallic types

2. Full face, flat ring, and metallic ring

3. Full face and spiral wound

4. O-ring and flat ring

The correct answer is: Full face, flat ring, and metallic ring

The selection of full face, flat ring, and metallic ring as the basic types of flange face gaskets is accurate because these gaskets are the most commonly utilized forms in piping systems. Each type serves a specific purpose based on the application and the characteristics of the media being contained. Full face gaskets provide a complete sealing surface that covers the entire flange, making them ideal for preventing leakage in applications where the fluid is abrasive or the flange surface is uneven. Flat ring gaskets, often made from materials such as rubber or soft plastic, fit within the seating surface of the flange and are effective for sealing under certain pressure conditions. Metallic ring gaskets, typically utilized in higher pressure applications, provide durability and strength to handle extreme conditions without compromising the seal. Understanding these basic types enables pipe fitters to select the appropriate gasket for their specific application, ensuring the integrity and safety of the piping system involved.