GASKET

A gasket is provided to reduce a reaction force in an attached state and suppress deterioration of sealing performance due to a corrosive foreign matter such as salty water and a snow melting agent. A gasket includes a metal base plate made of metal, and a covering layer formed of an elastic body that covers at least a part of the metal base plate. The metal base plate includes a pair of an upper face and a lower face that are back-to-back to each other, a bead portion protruding toward a side facing the upper face, an inner periphery portion extending from an inner periphery edge of the bead portion, and an outer periphery portion extending from an outer periphery edge of the bead portion. The outer periphery portion extends toward a side facing the lower face, in an oblique manner with respect to a protruding direction of the bead portion.