| 摘要 |
A cylindrical gasket includes a reinforcing member 70, a heat-resistant material 71, and pores which are dispersedly distributed in the reinforcing member 70 and the heat-resistant material 71, the reinforcing member 70 and the heat-resistant material 71 are intertwined with each other so as to be provided with structural integrity, and with respect to a total volume of the cylindrical gasket, the reinforcing member 70 occupies a volume of 32 to 60%, the heat-resistant material 71 occupies a volume of 5 to 58%, and the pores occupy a volume of 10 to 35%. |
