ELLIPTICAL EXPANSION PLUG FOR UNIVERSAL NOZZLE CASTING

摘要

An elliptical expansion plug for plugging elliptical openings. The elliptic al expansion plug has a concave inner surface and a convex outer surface sized to allow hand-fitting within an elliptical hole to be plugged. The size of the elliptical expansion plug is such that the elliptical expansion plug generally matches the shape of the elliptical opening to be plugged, and further sized to provide a continuous seal betwee n the outer edge of the elliptical expansion plug and the inner surface of the elliptica l opening to be plugged after installation of the elliptical expansion plug. When the convex outer surface is eliminated by deforming the elliptical expansion plug with tools such as a hammer and punch until the convex outer surface is flat, the outer edge of the elliptic al expansion plug comes into continuous contact with, and provides a continuous seal against, the inside circumference of the elliptical opening to be plugged.