Patent ID: 6502822
Filing Date: 2003-01-07
Classification: B21D,Y10T

Abstract:
A sealing unit for sealing an end of a tube, said tube having an outer wall and a bore defined by an inner wall, said sealing unit comprising:a tapered element adapted for insertion into said bore, said tapered element having a longitudinal axis; a metallic sealing ring having a cylindrical inside wall configured to fit closely around the outer wall of the end of said tube, said inside wall being co-axial with said longitudinal axis of said tapered element to provide an annular channel between said tapered element and said inside wall of said sealing ring, said annular channel having an open end and a closed end, said annular channel capable of receiving said end of said tube through said open end of said annular channel; and a base for holding said sealing ring in place, said base defining said closed end of said annular channel, said tapered element for wedging against said inner wall of said tube to provide a seal between said tapered element and said tube, said inside wall of said sealing ring having a uniform inner radius so as to prevent outward distortion of the outer wall of the end of said tube.