RESINOUS TUBE JOINT

摘要

A resin pipe joint in which, although an economical configuration formed by two components or a joint body and a union nut is employed, both a resistance against pulling and an excellent sealing property can be attained is provided. A resin pipe joint is configured so that the joint has: a synthetic resin-made joint body 1 including an inner cylinder portion 4, an external thread portion 5, and a radial groove m into which an end of a tube enters; and a union nut 2 that is made of a transparentable fluorine resin, and that includes an internal thread portion 8, a seal peripheral edge 10 which presses a tip end portion of a tube flared portion 3A, a slipping-off prevention peripheral edge 11 which is actable on a large-diameter portion of a flaring changing region 9, and a pressing inner peripheral portion 13 which is externally fittable to a flared straight portion 12, and, by a screw advancement of the union nut 2 in a state where the end of the tube 3 is inserted into the inner cylinder portion 4 and a flared portion 3A is formed, the pressing inner peripheral portion 13 is pressingly contacted with and externally fitted to the flared straight portion 12, a portion which is formed as a large-diameter portion of the flaring changing region 9 is pressed by the slipping-off prevention pressing portion 11, and a small-diameter portion of the flaring changing region 9 is pressed by the seal pressing portion 10.