Smooth, rounded integral bushing in each hub protects conductor insulation|Accurately tapped, tapered hub threads for tight, rigid joints and ground continuity|Removable nipple in male sealing fitting may be used interchangeably in top or bottom hub|For sealing vertical or horizontal conduit|Pouring spout rotates 90 deg|Removable cover provides full access for damming 1/2 to 1 in sizes have threaded cover openings for damming|1-1/4 in turning radius|Triple coat of zinc electroplate, chromate and epoxy powder coated finish|Prevent passage of gases, vapors or flames from one portion of conduit system to another|Restrict any explosion to the sealed off enclosure|Required in class I, Division 1 and 2 locations within 18 in of enclosures containing apparatus that may cause arcs, sparks or high temperatures|Required in class I, Division 1 and 2 locations where 2 in or larger conduit enters enclosure, fitting housing terminals, splices or taps|Required in class I, Division 1 and 2 locations at the boundary where conduit leaves classified location|Required in class I, Division 1 and 2 locations where two or more enclosures are connected by 36 in or less conduit|Seal must be located within 18 in of either enclosure