Rubber composition and polyamide laminate

Disclosed is a rubber composition used as a material for a cross-linked rubber for a laminate of polyether polyamide elastomer and the rubber. The rubber composition includes 35-80 parts by mass of silica (B), 0.5-10 parts by mass of a plasticizer having a prescribed structure (C), and 0.1-3 parts by mass of a cross-linking agent (D) with respect to 100 parts by mass of a natural rubber and/or a diene series synthetic rubber (A); the polyamide laminate is formed by laminating a polyether polyamide elastomer obtained by polymerizing a prescribed material and a cross-linked rubber obtained from the rubber composition; and the polyamide laminate, with a high interlayer adhesive force between the polyamide elastomer and the cross-linked rubber, and the material for the cross-linked rubber are provided.