Sealing resin composition and seal

Abstract

To provide a sealing resin composition and a seal that are capable of being used, in particular, in high temperature and high pressure gas, in particular hydrogen gas. A sealing resin composition is used in a piston ring 1 for sealing gas. When a molded body of the sealing resin composition is exposed to gas with a pressure of 82 MPa and a temperature of 200° C. for 192 hours, a dimensional change rate of the molded body relative to the molded body before the exposure is +1.0% or less, a retention rate of the tensile strength of the molded body after the exposure is 80% or more as the tensile strength of the molded body before the exposure is defined as 100%. The tensile strength of the molded body of the sealing resin composition is 100 MPa or more by a measuring method based on ASTM D638.

Dependencies are inferred from the claim text.