Abstract: The present invention provides a rubber composition capable of forming an inner tube and/or an outer cover having high adhesion to a brass-plated wire and having excellent heat resistance, and oil resistance in a hose using a brass-plated wire as a reinforcing layer. The rubber composition includes 100 parts by mass of a rubber component (A) that includes ethylene-(meth)acrylate copolymer rubber and/or hydrogenated acrylonitrile-diene copolymer rubber, 1 to 30 parts by mass of a phenol resin (B), 1 to 30 parts by mass of silica (C), 0.1 to 5 parts by mass of a triazine compound (D) represented by the following formula (I), and 1 to 15 parts by mass of an organic peroxide (E) (in the formula (I), R represents a mercapto group, alkoxy group, monoalkylamino group, dialkylamino group, monocycloalkylamino group, dicycloalkylamino group, or N-alkyl-N-arylamino group).

Abstract: The present invention provides a rubber composition capable of forming an inner tube and/or an outer cover having high adhesion to a brass-plated wire and having excellent heat resistance, and oil resistance in a hose using a brass-plated wire as a reinforcing layer. The rubber composition includes 100 parts by mass of a rubber component (A) that includes ethylene-(meth)acrylate copolymer rubber and/or hydrogenated acrylonitrile-diene copolymer rubber, 1 to 30 parts by mass of a phenol resin (B), 1 to 30 parts by mass of silica (C), 0.1 to 5 parts by mass of a triazine compound (D) represented by the following formula (I), and 1 to 15 parts by mass of an organic peroxide (E) (in the formula (I), R represents a mercapto group, alkoxy group, monoalkylamino group, dialkylamino group, monocycloalkylamino group, dicycloalkylamino group, or N-alkyl-N-arylamino group).