a plug for removably resealing an aperture in a soft plastic dispensing conduit of a container of material . the plug includes a handle - like upper portion , and a conically tapering lower portion with contiguous scoring edges each having a leading and a trailing surface which form a sharp circumferential point . by firmly inserting the plug into the aperture and then screwing it in , one or several points score a segment of the conduit interior surface , proximate to the aperture , forming grooves . meshing of edge points and grooves create an air - tight seal . the aperture , reopened by unscrewing the plug , can be repetitively resealed because the scoring edges track within the preformed grooves .