| 摘要 |
A polyol curable fluororubber composition, which comprises 100 parts by weight of a fluororubber, 6 to 15 parts by weight of magnesium oxide, 0.5 to 5 parts by weight of a hydrotalcite group compound and 20 to 55 parts by weight of a mixture of thermal black and a bituminous coal filler; a cured fluororubber formed article which is produced by forming and curing the fluororubber composition in the presence of a polyol curing agent, and then subjecting the cured formed product to a stepweise temperature elevation treatment in a temperature range of 100°C to 300°C; and a method for producing the article. The fluororubber composition uses a fluororubber of general use which can be cured with a polyol, and is capable of providing a grommet, a seal packing and the like to be used under high temperature circumstances, and thus can be used for producing a grommet, a seal packing and the like for a gas sensor used under high temperature circumstances, such as an oxygen sensor for an automobile, at a reduced cost.
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