| abstract |
PROBLEM TO BE SOLVED: To provide a rubber composition constituting a rubber member arranged near a steel cord-coated rubber, which has improved workability while maintaining adhesiveness. SOLUTION: A total of 20 to 100 parts by weight of carbon black and / or silica is blended with 100 parts by weight of a sulfur-vulcanizable diene-based rubber containing 20 to 100 parts by weight of natural rubber. Hydrogen, polysulfuric acid, A rubber composition comprising 1 to 20 parts by weight of at least one sulfur-based extreme-pressure additive selected from the group consisting of polysulfide fatty acid esters and polysulfide oils. |