A gasket (correct terminology is a "joint" made from "jointing material") is a mechanical seal that fills the space between two mating surfaces.
Gasket may also refer to: Flange gasket, a type of gasket made to fit between two sections of pipe Head gasket, a gasket used in internal combustion engines Gasket (sailing), a rope used to hold a stowed sail in place Apollonian gasket, a fractal generated from triples of circles Sierpiński triangle, also called Sierpiński gasket or Sierpiński sieve, a fractal generated from triangles The Gaskets, U.S. synth-pop/rock band