Sealing member

The sealing member (1) has a plurality of insertion holes (20) into which a counterpart member (8) is inserted, is a cured product of a silicone rubber composition having a silicone rubber and silica particles, and satisfies the following conditions (a) to (d): a) when the content of the silica particles with respect to 100 parts by mass of a base polymer of the silicone rubber is X parts by mass, X is an integer greater than or equal to 2; the elastic recovery rate (%)/X (parts by mass) is 3.6-9.6; (b) Type A durometer hardness is from 15 to 30 (inclusive); (c) the tensile strength at break is 2.1 MPa or more; (d) The dynamic friction coefficient of the surface of the insertion hole (20) is 2.5 or less. 密封构件(1)具有供对方构件(8)插入的多个插入孔(20)，该密封构件是具有硅橡胶和二氧化硅颗粒的硅橡胶组合物的固化物，满足以下的条件(a)～(d)：(a)在将相对于该硅橡胶的基础聚合物100质量份的该二氧化硅颗粒的含量设为X质量份的情况下，弹性回复率(％)/X(质量份)＝3.6～9.6；(b)A型硬度计硬度为15以上且30以下；(c)断裂拉伸强度为2.1MPa以上；(d)插入孔(20)的表面的动摩擦系数为2.5以下。