A gasket is provided that can effectively alleviate stresses arising therein when at high temperatures. A substantially annular gasket 1 used in coupling an outlet 30 of a turbocharger 3; the gasket 1 includes a gasket face 10 that is an abutting face of the gasket 1 that abuts a flange 31 when the gasket is in a state fitted to the flange 31 of an outlet 30; and the gasket face 10 is an annular shape having the plurality of fastener holes 11A, 13A, 15A and 17A, and in an area between one fastener hole and another fastener hole, the width of a portion H that reaches the highest temperature by exhaust gas channeled by the W/G valve 5 impinging thereon is formed to be the narrowest, and the width gradually increases as approaching towards the one fastener hole or the other fastener hole from the portion.