GASKET, MANUFACTURING METHOD THEREFOR, SEALING METHOD AND SEALING STRUCTURE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a gasket made from an acryl rubber capable of reducing friction coefficient without applying a mold release agent separately and reducing compression permanent set under a high temperature.SOLUTION: There is provided a gasket by crosslinking a rubber composition containing an acryl rubber (A), a process oil (B) and a crosslinking agent (C), the acryl rubber (A) is a polymer containing an acrylic acid ester unit of 90 to 99 mass% and a crosslinkable monomer unit having a carboxyl group of 1 to 10 mass%, the crosslinking agent (C) is a polyamine compound, the process oil (B) of 1 to 10 pts.mass and the crosslinking agent (C) of 0.1 to 3 pts.mass are contained based on 100 pts.mass of the acryl rubber (A) and 98 mass% or more of the total polymer component contained in the rubber composition is the acryl rubber (A).SELECTED DRAWING: None