CYLINDRICAL GASKET, METHOD FOR MANUFACTURING SAME, AND INSERTION-TYPE EXHAUST PIPE JOINT USING THE CYLINDRICAL GASKET

摘要

A cylindrical gasket (23) configured in such a manner that a heat resistant material (1) which comprises expanded graphite and a reinforcement material (2) which comprises a metallic mesh are compressed and entangled so as to be structurally integrated together. The exposed cylindrical inner peripheral surface (19), the exposed cylindrical outer peripheral surface (20), and the exposed axial annular end surfaces (21, 22) of the cylindrical gasket (23) each comprise a surface in which a surface portion which comprises the heat resistant material (1) and a surface portion which comprises the reinforcement material (2) are mixed. In the cylindrical gasket (23), the density of the heat resistant material (1) is in the range of 1.21-1.58 Mg/m3 and the mass of the reinforcement material (2) occupies 50-80% of the total mass of the cylindrical gasket (23).