A spinning reel for fishing includes: a reel body 1 including a front portion a handle 6 provided in the reel body a cap-shaped cover body 50 including a surrounding wall 50a mounted to the front portion of the reel body a spool 4 on which a fishing line is to be wound a rotor 3 including a fishing line guide part 3d, the rotor being configured for being rotated by the rotational manipulation of the handle 6 to wind the fishing line on the spool 4 a driving part 8 passing through the cover body and configured for transmitting the rotation of the handle to the rotor a support part 1a provided in the front portion of the reel body and supporting the driving part 8 and a magnetic seal device 150 mounted to the cover body 50 and including a magnet 151 and a magnetic fluid.
