EYSX expanded fill sealing fittings from Eaton's Crouse-Hinds Division provide 40% wire fill capacity to allow uninterrupted runs in a conduit system.   They are designed to restrict the passage of gases, vapors or flames from one portion of the electrical installation to another, limit explosions to the sealed off enclosure, and limit pre-compression or “pressure piling” in conduit systems.   EYSX expanded fill sealing fittings are available for installation in both horizontal or vertical positions.