A scroll compressor comprising: a housing; a fixed scroll located in and fixed to the housing; a movable scroll that orbits with respect to the fixed scroll, wherein a compression chamber is formed between the movable scroll and the fixed scroll; an opposing wall located in and fixed to the housing, wherein a back pressure region is formed between the opposing wall and the movable scroll, and a back pressure in the back pressure region urges the movable scroll toward the fixed scroll; and an annular sealing member (51, 51A) arranged between the movable scroll and the opposing wall, wherein the movable scroll includes an end surface that faces the opposing wall and the end surface includes a holding portion (50, 60), wherein the holding portion (50, 60) holds the sealing member (51, 51A), the sealing member (51, 51A) includes a rubber portion (53, 53A), which elastically deforms in the holding portion (50, 60), and a resin portion (52, 52A), which is made of a material harder than the rubber portion (53, 53A), the resin portion (52, 52A) at least partially projects out of the holding portion (50, 60) toward the opposing wall, the resin portion (52, 52A) is in contact with the opposing wall, the resin portion (52, 52A) includes a flat surface that faces the rubber portion (53, 53A), and a space is formed between the holding portion (50, 60) and the rubber portion (53, 53A) to allow the rubber portion (53, 53A) to elastically deform in the holding portion (50, 60), the scroll compressor being characterized in that the rubber portion (53, 53A) includes a flat surface that faces the resin portion (52, 52A). a housing; a fixed scroll located in and fixed to the housing; a movable scroll that orbits with respect to the fixed scroll, wherein a compression chamber is formed between the movable scroll and the fixed scroll; an opposing wall located in and fixed to the housing, wherein a back pressure region is formed between the opposing wall and the movable scroll, and a back pressure in the back pressure region urges the movable scroll toward the fixed scroll; and an annular sealing member (51, 51A) arranged between the movable scroll and the opposing wall, wherein the movable scroll includes an end surface that faces the opposing wall and the end surface includes a holding portion (50, 60), wherein the holding portion (50, 60) holds the sealing member (51, 51A), the sealing member (51, 51A) includes a rubber portion (53, 53A), which elastically deforms in the holding portion (50, 60), and a resin portion (52, 52A), which is made of a material harder than the rubber portion (53, 53A), the resin portion (52, 52A) at least partially projects out of the holding portion (50, 60) toward the opposing wall, the resin portion (52, 52A) is in contact with the opposing wall, the resin portion (52, 52A) includes a flat surface that faces the rubber portion (53, 53A), and a space is formed between the holding portion (50, 60) and the rubber portion (53, 53A) to allow the rubber portion (53, 53A) to elastically deform in the holding portion (50, 60), the scroll compressor being characterized in that the rubber portion (53, 53A) includes a flat surface that faces the resin portion (52, 52A).