Ring Body, Pipe Joint, And Method For Joining Pipes Using Said Ring Body

Abstract: This ring body 40 includes: an annular ring body 41 that can be inserted between an inner peripheral surface 22a of a socket protrusion 22 and an outer peripheral surface 3a of a spigot 3; and a plurality of gap maintaining parts 42 that can be inserted between a socket sealing surface 21 and the outer peripheral surface 3a of the spigot 3. The plurality of gap maintaining parts 42 are provided to the ring body 41 with prescribed gaps therebetween in the pipe circumferential direction. The plurality of gap maintaining parts 42 are inserted between the socket sealing surface 21 and the outer peripheral surface 3a of the spigot 3, thereby keeping a gap 52 between the socket sealing surface 21 and the outer peripheral surface 3a of the spigot 3 at a prescribed size at which it is possible to push in a seal ring. A retreat space into which a distal end portion of the compressed seal ring can enter is formed at a location closer to a socket opening end than the ring body 41 between one gap maintaining part 42 and another gap maintaining part 42 that are adjacent.

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