Spiralförmige Dichtung und ihr Herstellungsverfahren

摘要

A spiral wound gasket is formed by winding combinedly and spirally a metal strip (5) having at least one bending cross section in the cross direction and a belt-shaped filler in such a way that the metal strip and the filler are piled up in the longitudinal direction and the filler protrudes from the both edges of the metal strip (5) in the cross direction. The spiral wound gasket employes, as the filler, a flexible tape (1) of carbon/carbon composites having a structure in which a carbon fiber (2) in a bundle or string is contained in the thickness direction of an expanded graphite tape (1a) and the carbon fiber (2) is caused to locate in the bending section of the flexible tape (1) formed when the flexible tape (1) and the metal strip (5) in a pile are wound. The spiral wound gasket is used as a pipe fitting etc. for use under high temeprature and pressure conditions.