A mechanical seal for sealing between a rotatable shaft and a housing, the mechanical seal comprising: opposed first and second sealing members each having an annular sealing face (22, 24) surrounding the shaft, the first sealing member adapted to be sealed to the rotatable shaft and the second sealing member adapted to be sealed to the housing, the sealing faces (22, 24) being arranged to be urged into contact to form a seal therebetween; and a mounting assembly arranged to secure one of the sealing members (16, 18) in position relative to a support structure (14, 34) of the mechanical seal, the mounting assembly including: a mount (28, 38) having a base portion (72, 74) secured to the one sealing member (16, 18) and a rib portion (76, 78); characterised in that the rib portion (76, 78) projects outwardly from the base portion (72, 74) beyond the one sealing member (16, 18) and in a plane parallel to the sealing face (22, 24) of the one sealing member, the rib portion (76, 78) having a free end opposite the base portion (72, 74) that is spaced apart from and not in contact with the one sealing member (16, 18), the mounting assembly further including the support structure (14, 34), and a holding piece (30, 82) mounted to the support structure (14, 34), the rib portion (76, 78) being disposed between the holding piece (30, 82) and the support structure (14, 34) and being releasably clamped therebetween to clamp the rib portion (76, 78) relative to the support structure (14, 34) to allow the transfer of torque between the one sealing member (16, 18) and the support structure, and the mount (28, 38) is arranged to deform under load so as to distribute the torque loading on the one sealing member (16, 18). opposed first and second sealing members each having an annular sealing face (22, 24) surrounding the shaft, the first sealing member adapted to be sealed to the rotatable shaft and the second sealing member adapted to be sealed to the housing, the sealing faces (22, 24) being arranged to be urged into contact to form a seal therebetween; and a mounting assembly arranged to secure one of the sealing members (16, 18) in position relative to a support structure (14, 34) of the mechanical seal, a mount (28, 38) having a base portion (72, 74) secured to the one sealing member (16, 18) and a rib portion (76, 78); the rib portion (76, 78) projects outwardly from the base portion (72, 74) beyond the one sealing member (16, 18) and in a plane parallel to the sealing face (22, 24) of the one sealing member, the rib portion (76, 78) having a free end opposite the base portion (72, 74) that is spaced apart from and not in contact with the one sealing member (16, 18), the mounting assembly further including the support structure (14, 34), and a holding piece (30, 82) mounted to the support structure (14, 34), the rib portion (76, 78) being disposed between the holding piece (30, 82) and the support structure (14, 34) and being releasably clamped therebetween to clamp the rib portion (76, 78) relative to the support structure (14, 34) to allow the transfer of torque between the one sealing member (16, 18) and the support structure, and the mount (28, 38) is arranged to deform under load so as to distribute the torque loading on the one sealing member (16, 18).