A damper includes a bobbin which is housed in a cylinder and on which a coil is wound and yokes housed in the cylinder. At least one of the yokes is disposed at a first axial side of the bobbin, and at least one other of the yokes is disposed at a second axial side of the bobbin. A magnetic viscous fluid is retained on inner surfaces of the yokes and an inner surface of the bobbin. Sealing members are configured to prevent leakage of the magnetic viscous fluid. A shaft extends through the yokes, the bobbin and the sealing members and is configured to be axially reciprocable relative to the yokes, the bobbin and the sealing members such that reciprocation of the shaft does not substantially displace the magnetic viscous fluid. The coil, the bobbin and the yokes are fixed together by a resin.