Final answer:
Full-face gaskets are intended for use with flat-faced flanges, offering a broad sealing surface that encompasses bolt holes and accommodates for surface irregularities.
Step-by-step explanation:
Full-face gaskets are designed to be used with flat-faced (FF) flanges. These gaskets cover the entire face of the flange, including the bolt holes, providing a larger sealing surface area.
This type of gasket is particularly useful for ensuring a tight seal on flanges that may have surface imperfections, uneven areas, or other minor damage.
Full-face gaskets are typically made of materials such as rubber, neoprene, or other suitable composites that can create an effective seal over the entire contacting surface of the flange.