Simplified low insertion force sealing device capable of self restraint and joint deflection

A conduit, comprising:

• a pipe;
• and
• at least one bell having a first end and a second end, the first end coupled to the pipe;
• wherein the bell has a concave annular inner surface and a diameter of the annular inner surface adjacent to the first end of the bell is greater than a diameter of the annular inner surface adjacent to the second end of the bell.

A sealing device;

• comprising:
• at least one rigid segment comprising a convex outer surface;
• and
• a K-type gasket coupled to the segment.

A conduit coupling system, comprising:

• at least two piping components;
• wherein a first component has a bell and a second component has a spigot, the spigot adapted to mate with the bell, the bell comprises:
• a first end and a second end, the first end coupled to the first component;
• wherein the bell has a concave annular inner surface and a diameter of the annular inner surface adjacent to the first end of the bell is greater than a diameter of the annular inner surface adjacent to the second end of the bell;
• and
• a sealing device, comprising:
• at least one segment comprising a convex outer surface adapted to engage the concave annular inner surface;
• and
• a K-type gasket coupled to the segment;
• wherein the sealing device is adapted to fit between the bell and the spigot.

A method of coupling at least two conduits, comprising:

• positioning a sealing device inside a bell coupled to one end of a first conduit;
• inserting a spigot of a second conduit through the sealing device inside the bell, wherein the scaling device is adapted to move axially within the bell in the direction of the insertion of the spigot and in a radial direction from a centerline of the conduit;
• and
• partially removing the spigot from the bell, wherein a segment of the sealing device engages the outer surface of the spigot end as the spigot end is partially removed from the bell.