O-Z/Gedney conduit sealing bushings are used for sealing the ends of conduit in applications involving higher static gas or fluid pressures than can be handled by standard sealing bushings. They are designed for use with for use with insulated wire, cable and rigid metal conduit. If they are used with IMC/EMT, a short nipple of rigid metal conduit should be used to accommodate the conduit sealing bushings. For SCH 40 PVC conduit.