INNER DIAMETER TEST PLUG AND METHOD OF USE

摘要

An inner diameter plug (40, 70, 140) for sealing a pipe (48) near an open end of the pipe (48). The plug (40, 70, 140) has an annular, high durometer seal (42, 72, 142) capable of being axially compressed and radially expanded to sealingly engage the inner diameter of the pipe (48). The annular seal (42, 72, 142) is capable of expansion in excess of an inch from its uncompressed diameter to provide significant plug-to-pipe clearance during insertion and removal of the test plug (40, 70, 140). In some preferred embodiments, the test plugs (140) are provided with a pair of compression hubs (154, 156) each having recessed, or non-recessed, tapered seal confronting surfaces.