Tube and cylindrical surface sealing apparatus

A fluid-tight sealing apparatus for sealing a tube receiving a cylindrical conduit having an outer diameter of X wherein the tube and the conduit are subject to relative angular misalignment, axial movement and rotation, the combination comprising:

• a metallic resilient sealing member extending axially outward of the tube from an end of the tube,
• said sealing member comprising a ring portion having a curved surface for contacting the outer surface of the cylindrical conduit, and a frustoconical tapering portion,
• said tapering portion having the larger end thereof coupled to said end of the tube and having the smaller end thereof coupled to said ring portion,
• said ring portion and said tapering portion being formed from a single piece of material,
• said tapering portion extending axially outward of the tube from said end of the tube,
• said ring portion extending axially outward from the smaller end of said tapering portion,
• said ring portion curved surface having a free diameter smaller than X to provide an interference fit between said outer surface of the cylindrical conduit and said curved surface, thereby forming a fluid-tight seal therebetween.

A fluid-tight sealing apparatus for sealing a tube to a cylindrical surface having a diameter of X wherein the tube and the cylindrical surface are subject to relative angular misalignment, axial movement and rotation, the combination comprising:

• a metallic, resilient sealing member extending axially of the tube at the end of the tube,
• said sealing member comprising a ring portion having a curved surface for contacting the cylindrical surface, and a tapering portion,
• said ring portion extending axially away from an end of said tapering portion,
• said tapering portion being located on one side of the plane containing the end of the tapering portion from which the ring portion extends and said ring portion being located on the other side of said plane,
• said ring portion and said tapering portion being formed from a single piece of material,
• said ring portion curved surface having a free diameter different from X to provide an interference fit between said curved surface and the cylindrical surface, thereby forming a fluid-tight seal therebetween.