To obtain an elastomer composite excellent in durability, pressure resistance at high temperatures, mechanical strength and productivity, and comprising a fiber product and elastomer composition dynamically crosslinked with a crosslinkable elastomer and thermoplastic resin.

This elastomer composite comprises an elastomer composition and a fiber product, wherein the elastomer composition is partially and fully crosslinked with (A) 1 to 99 pts.wt. of crosslinkable elastomer (pref. an ethylene/α-olefin copolymer formed of ethylene and 6-12C α-olefin and obtained by using a metallocene-based catalyst) and (B) 1 to 99 pts.wt. of thermoplastic resin (pref. an olefin-based resin).