a pipe joint for plastic pipe includes a bell member and a spigot member . the bell member includes a tubular plastic body wall having a metal reinforcement ring . the spigot member , which is insertable into the bell member , includes a tubular plastic body wall having an internal surface and an external surface and a longitudinal axis and metal reinforcement encased within the tubular plastic body wall . a plurality of plastic ribs extend from the external surface of the tubular plastic body wall and form a gasket channel .