| abstract |
(57) [Summary] [Problem] To provide a sealing material having both high heat resistance and high corrosion resistance. SOLUTION: The gasket 100 is formed by drying and solidifying a paste obtained by mixing alumina fine particles, water and a surfactant. Preferably, the paste is formed by applying the paste to the object 102 and then drying and solidifying the paste. Also, Preferably, the alumina fine particles are configured to include a plurality of types of alumina fine particles having mutually different average particle diameters, As a result, a gasket having a close-packed structure is formed. |