Abstract: A unique fluid pipe/duct coupling/fitting having flexible arcuate pliable and deformable gaskets such as an O-ring providing the seal between an OD pipe and the ID coupling or fitting and an uncouple retard structure for promoting the insertion of the tubular fluid connector from backing away or withdrawing from the fluid pipe into which the ID coupling is being inserted. The uncoupling retarder structure includes a first starting groove and a last or final resting groove both disposed on the tubular wall of the fluid connector pipe, the first beginning and last final resting groove being disposed and having a predetermined longitudinal distance along the length of the pipe wall between them.