ring 45 the teeth 135 extend in the direction the pipe 120 is inserted into the body 15 so that attempts to remove the pipe from within the body are opposed by the teeth 130 that dig into the pipe 120 during such an attempt the teeth 130 also oppose rotation of the gripper ring 45 about the pipe 120 as shown in fig5 the ears 90 of the backer ring 40 are inserted into the outboard openings 85 in the body 15 thereby preventing the backer ring 40 from any rotation therein further the outwardly extending fingers 130 of the gripper ring 45 fit within the indentations 105 in the backer ring 40 thereby preventing the gripper ring 45 from rotating within the backer ring 40 referring to fig2 and 2a after insertion of the insertion of the backer ring 40 the gripper ring 45 the collet 55 is inserted into the retainer 50 an outward extension 140 of the collet 55 gets hung up on an interior shoulder of the retainer 50 the retainer 50 similar to the backer ring 40 has a pair of ears 150 for insertion into the outboard openings 85 in the body 15 body to seal the body and prevent.