A prosthetic limb attachment system, for attaching a residual limb segment having a distal end to a prosthetic limb having a socket having an open proximal end and a closed distal end, using a liner. The liner is made of a flexible material and has an open proximal end, a closed distal end, and liner walls extending therebetween. The liner has a sealing ring extending laterally inwardly from the walls that has a central opening. The liner is turned inside out and the liner walls are rolled up onto the residual limb segment so that the sealing ring may be positioned against the residual limb segment, oriented upwardly thereupon, to create a vacuum seal such that downward forces on the liner will only increase the vacuum seal with the residual limb segment.
