Patent ID: 7879948

Claim:
A fluorine-containing composition comprising a fluorine-containing elastomer (A) and a fluorine-containing elastomer (B) having a lower molecular weight than the fluorine-containing elastomer (A), wherein the fluorine amount of the fluorine-containing elastomer (B) is larger than a fluorine amount of the fluorine-containing elastomer (A), the fluorine amount of the fluorine-containing elastomer (A) is at least 69% by weight to less than 71% by weight, the fluorine amount of the fluorine-containing elastomer (B) is at least 72% by weight to at most 76% by weight, and an amount of the fluorine-containing elastomer (B) is 0.1 to 90 parts by weight based on 100 parts by weight of the fluorine-containing elastomer (A).