SEALING MEMBER FOR PIPING COMPONENT HAVING EXCELLENT CHLORINE RESISTANCE, METHOD FOR PRODUCING SEALING MEMBER FOR PIPING COMPONENT HAVING EXCELLENT CHLORINE RESISTANCE, SEALING MEMBER FOR PIPING COMPONENT HAVING EXCELLENT OIL RESISTANCE, AND PIPING COMPONENT HAVING EXCELLENT OIL RESISTANCE

摘要

Disclosed is a method for producing a sealing member for piping materials having excellent chlorine resistance, which includes a first step and a second step. The first step is a step wherein first carbon nanofibers produced by vapor deposition are subjected to an oxidation treatment, thereby obtaining second carbon nanofibers each having an oxidized surface. The second step is a step wherein carbon black having an average particle diameter of from 50 nm to 10 μm and the second carbon nanofibers are mixed into an ethylene-propylene rubber and dispersed in the ethylene-propylene rubber by a shearing force.