A friction member has a pair of friction facings 46a and 46b that are designed to reduce drag torque during operation in a fluid filled chamber. The friction member has a circular friction plate 43 with an aperture at its center and the friction facings 46a and 46b are coupled thereto. The friction member can be part of a lock-up device 4 of a torque converter 1 or a part of a power cut-off clutch 102 of a torque converter. The friction member has a first friction facing 46a that is formed of an annular and flat main body. The main body has a first surface fixedly coupled to the friction plate 43 and a second surface on the opposite side with a plurality of grooves 81. The grooves 81 extend through from the inner periphery to the outer periphery and having bent portions 83 and 85 at a middle area. In another embodiment, a friction member is provided with friction facings 141 and 142 with center apertures, which are rotatable in a fluid chamber around a central axis to suppress lowering of fluid pressure due to rotation. The annular friction surfaces of the facings 141 and 142 are provided with a plurality of grooves 190. Each of the grooves 190 extends from the inner periphery to the outer periphery and has a bent portion at a middle area. The bent portion of the groove 190 is formed of radially outer and inner grooves and has a V-shaped opening in the rotating direction of the friction facings. The bent portion prohibits the rapid flow of fluid through the groove. Consequently, lowering of the fluid pressure can be suppressed.