Appleton™ EY 25% fill vertical and horizontal conduit sealing fittings prevent the passage of gases, vapors or flames from one portion of a conduit system to another. They also restrict large amounts of ignitable gases or vapors from accumulating to confine explosive pressure. Appleton sealing fittings are explosionproof, dust-ignitionproof and raintight. They are suitable for use in Class I and II locations. Features: Explosionproof, dust-ignitionproof, raintight; Prevent passage of gases, vapors or flames from one portion of conduit system to another. Restrict any explosion to the sealed off enclosure. Prevent pressure piling within conduit system; Required in Class I, Division 1 and 2 locations within 18\" of enclosures containing apparatus that may cause arcs, sparks or high temperatures; Required in Class I, Division 1 and 2 locations where 2\" 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\" or less conduit. Seal must be located within 18\" of either enclosure; Required where cables (which exceed rate of gas or vapor transmission permitted for seals) are used in Class I, Division 2 locations; Smooth, rounded integral bushing in each hub protects conductor insulation; Accurately tapped, tapered threads for tight, rigid joints and ground continuity; Removable nipple in male sealing fitting may be used interchangeably in top or bottom hub; UL Listed for use with Kwiko™ A Sealing Compound. Also listed with certain competitors sealing cement, contact factory for details; Close radius type for sealing vertical or horizontal conduit runs