The conical shrinking Pipe Plugsare made with a new type of chloropene and aramid fabric rubber, reinforced with hot vulcanized rubber and they are more versatile than conventional pipe plugs because of their flexible inflatable structure. Available in a variety of sizes that covers a broader range of pipe diameters than most pipe plugs.This type of shrinking pipe plugs allows to sealing off non-symmetrical pipe cross sections and an easy access through small manholes.