| 摘要 |
[Problem] To provide a fluororubber composition which (1) achieves an excellent shock absorbing property upon collision with an arm, (2) achieves non-tackiness, (3) is clean, and (4) is free of halogen substance (chlorine); and a method for producing a crosslinked fluororubber product. [Means for Solving the Problem] A fluororubber composition comprising: a polyol-crosslinkable fluororubber comprising a fluoropolymer; a polyol crosslinking agent; and a salt having BF4−as a counter ion; wherein the polyol crosslinking agent is included as an effective component in an amount of 1.25 to 3.0 parts by weight based on 100 parts by weight of the fluoropolymer; and wherein the salt having BF4−as a counter ion is included in an amount of 0.700 to 0.900 part by weight based on 100 parts by weight of the fluoropolymer; and a method for producing a crosslinked fluororubber product, comprising: previously polyol-crosslinking the above-recited fluororubber composition; and subsequently heat-treating the resulting crosslinked fluororubber composition at a temperature ranging from 200° C. to 300° C. for 0.1 to 48 hours, to obtain a crosslinked product which exhibits a holding-torque increased ratio of 30% or less in an averaged manner.
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