Curable fluorine-based elastomer composite and cured product thereof

A curable fluorine-based elastomer composite, comprising:

• a curable fluorine-based polymer comprising a curable fluorine-based elastomer including a copolymerization unit having a curing site;
• a crosslinking agent that reacts with the curing site of the elastomer to form a crosslinking unit in the elastomer;
• and
• a crosslinking aid including an organic onium salt, wherein the organic onium salt is a salt of (trifluoromethyl)benzyl alcohol and tetramethyl ammonium or tetrabutyl phosphonium, and wherein the total content of the crosslinking agent and the crosslinking aid is about 0.5 parts by mass or more and about 3 parts by mass or less with reference to 100 parts by mass of the curable fluorine-based polymer, and the ratio between the crosslinking agent and the crosslinking aid is from about 2:8 to about 7:3.