The invention is a
pipe joint that is particularly suitable for joining pipes composed of materials having a low
surface energy and excellent resistance to solvents. The major components are an extrudable
adhesive; a first
pipe having a socket with an inside
diameter, where said socket has a mouth, a self-centering bottom, and a substantially cylindrical wall with an inlet, an outlet, and an inner annular channel; a second
pipe having an
insertion section with an end and an outer annular channel, said second pipe having an outside
diameter that is less than the inside
diameter of the socket, where the difference in diameters defines a gap and where the outer annular channel lines up with the inner annular channel therein forming an
interlocking keyway; and a flanged annular ring, where said annular ring has an inside diameter that enables it to be slid over the second pipe and a thickness that is comparable to the gap, and where the
flange has a width that is sufficient to cap the mouth of the socket. When fully formed, the
adhesive has changed to a
solid material that substantially fills the gap and the
interlocking keyway, and serves as a mechanical key in the
interlocking keyway. The
adhesive is preferably an
alkyl borane adhesive.