a disintegrating plug uses a setting tool to push a swage into the plug body that has external ribs that contact the wall of the surrounding tubular . the ribs retain the body to the surrounding tubular wall with frictional contact . some leakage may ensue but in fracturing some leakage does not matter if enough volume under the right pressure reaches the formation . the sheared member during the setting comes out with the mandrel that is part of the setting tool . in an alternative embodiment one or more o - rings are used to seal while anchoring is assisted by the hardened insert that can be snap fitted in using rib flexing or that can be a c - ring that is expanded and snapped in . the o - ring are axially spaced from the insert .