A plumbing connector comprising: a fitting having a first end and a second end and having external threads on at least the first end ; a tube having a first end and a second end , the first end of the tube inserted into the first end of the fitting ; an annular gasket coaxial with and surrounding an outer diameter of the tube and adjacent the first end of the fitting ; a compression ring coaxial with and surrounding the outer diameter of the tube and adjacent the gasket , the compression ring having an inner edge and an outer edge ; and a lock ring coaxial with and surrounding the outer diameter of the tube and adjacent the compression ring , the lock ring having an inner edge and an outer edge ; a nut coaxial with and surrounding an outer diameter of the tube and having internal threads adapted to engage the external threads of the fitting , the nut adapted to contain the gasket , compression ring , and lock ring upon threading of the nut onto the fitting via the internal threads of the nut and the external threads of the fitting , characterized in that upon threading of the nut onto the fitting via the internal threads of the nut and the external threads of the fitting and tightening of the nut , the gasket is compressed, the inner edge of the lock ring bitingly engages the outer diameter of the tube , the gasket forms a seal with at least the first end of the fitting , the outer diameter of the tube , and the outer edge of the lock ring , and contact between the compression ring and the lock ring deforms the lock ring pushing the inner edge of the lock ring into a biting engagement with the outer diameter of the tube and the outer edge of the lock ring into a sealing engagement with the gasket , and the compression ring is spaced apart from the tube . a fitting having a first end and a second end and having external threads on at least the first end ; a tube having a first end and a second end , the first end of the tube inserted into the first end of the fitting ; an annular gasket coaxial with and surrounding an outer diameter of the tube and adjacent the first end of the fitting ; a compression ring coaxial with and surrounding the outer diameter of the tube and adjacent the gasket , the compression ring having an inner edge and an outer edge ; and a lock ring coaxial with and surrounding the outer diameter of the tube and adjacent the compression ring , the lock ring having an inner edge and an outer edge ; a nut coaxial with and surrounding an outer diameter of the tube and having internal threads adapted to engage the external threads of the fitting , the nut adapted to contain the gasket , compression ring , and lock ring upon threading of the nut onto the fitting via the internal threads of the nut and the external threads of the fitting , characterized in that upon threading of the nut onto the fitting via the internal threads of the nut and the external threads of the fitting and tightening of the nut , the gasket is compressed, the inner edge of the lock ring bitingly engages the outer diameter of the tube , the gasket forms a seal with at least the first end of the fitting , the outer diameter of the tube , and the outer edge of the lock ring , and contact between the compression ring and the lock ring deforms the lock ring pushing the inner edge of the lock ring into a biting engagement with the outer diameter of the tube and the outer edge of the lock ring into a sealing engagement with the gasket , and the compression ring is spaced apart from the tube . <EOS>