Gasket is a consumable product, its one-time use, it seals fluid in pipeline and equipment’s
Gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression.
Gaskets allow for "less-than-perfect" mating surfaces on machine parts where they can fill irregularities. Gaskets are commonly produced by cutting from sheet materials.
It is usually desirable that the gasket be made from a material that is to some degree yielding such that it can deform and tightly fill the space it is designed for, including any slight irregularities.
Some (piping) gaskets are made entirely of metal and rely on a seating surface to accomplish the seal;
Oil and gas industry: